Here is Clark’s essay at naturalism.org:
Death, Nothingness, and Subjectivity
Maybe someone else can read it and tell my why I should take it seriously.
IMO it runs off the rails in the fifth paragraph and never gets back on the rails. I think it’s easy to identify the error in the fifth graph.
As I have previously noted, I do take (somewhat, provisionally) seriously Nietzsche’s eternal recurrence, because if the block universe model is correct, it may imply (even entail?) eternal recurrence.
You're completely out in left field. There is no block universe.
And you know this how?
The theory of relativity clearly indicates a block universe, that past present and future all exist. And the theory of relativity has passed every test for more than a hundred years.
The theory of relativity is wrong, then.

Time is not a dimension. It cannot bend due to gravitational pull. Time allows us to measure change. This is a good thing because it leads into why we are born again and again and again. I posted this once, but it seems that people need to hear things over and over to have a chance at understanding.
Now to solve this apparently unsolvable problem, it is first necessary to establish certain undeniable facts. Therefore, let me begin by asking you if there is such a reality as the past? Does this word symbolize something that is a part of the real world?
“Of course… yesterday is the past, today is the present, and tomorrow is the future. And this is a mathematical relation.”
“It is true that yesterday was Thursday and the day before was Wednesday, and there isn’t any person alive who will disagree. But this does not prove whether the word past is an accurate symbol. Can you take it, like you can the words ‘apple’ and ‘pear,’ and hang it up on something so I can look through it at the real McCoy? When does the present become the past? I want you to demonstrate how the present slips into the past. That cannot be done by God Himself. The reason man cannot do what I asked is because there is no such thing as the past. The past is simply the perception of a relation between two points. As I move from
here to
there, the past is what I leave behind while in motion; it is my ability to remember something that happened. In actual reality you are not moving between two points, a beginning and an end, you are in motion in the present. I know that we were talking yesterday, and that I was talking a fraction of a second ago, and that I am still talking. The word ‘past’ is obviously the perception of a relation that appears undeniable because it has reference to the revolution of the earth on its axis in relation to the sun. You are conscious that it takes a certain length of time to do something and because you are also conscious of space, you perceive that as you traverse a point from
here to
there what is left behind as you travel is called the past and your destination is the future. Here lies a great fallacy that was never completely understood, for how is it humanly possible for there to be such a thing as the past and future when in reality all we ever have is the present? Yet we have a word to describe something that has no existence in the real world. Socrates never lived in the past — he lived in the present, although our recollection of him allows us to think back to this time period. The reason we say that Socrates lived in the past is because this particular individual is no longer here. But is it possible for you to say that God existed in the past? Does anyone ever sleep in the past; does the sun ever shine in the past; is it possible for you to do anything in the past? If you were sitting on a high cloud these last ten thousand years, never asleep, you would have watched Socrates in the present, just as you are watching me write this book in the present. In order for me to prove what seems impossible, it is absolutely necessary that I deconfuse the mind of man so we can communicate.
Because it's science fiction, that's why.
No. Lots of things are both science fiction and real.
Verne (and many others) wrote science fiction about men travelling to the Moon.
That doesn't in any way imply that men have never travelled to the Moon.
Some things considered science fiction turned into reality. But some things can never be reality, no matter how possible it sounds.
All the theories out there can't be right.
Indeed. But how to tell which are wrong?
Looking at the proof.
You can imagine anything you want, but it doesn't make it true.
Indeed. So how do we tell what is true and what isn't?
Looking at the proof, which doesn't always involve experiments that start with a hypothesis.
I gave my reasons.
The future never arrives.
How do you know this?
We look back at our past, and we make plans for the future, but in actuality, the past is a bunch of stored memories, and the future is just a thought of things that could be, but it actually has no reality.
How do you know?
We don't live in the future. We live in the here and now.
That's tautologically true. A single observer lives only in their present. But other observers, who are moving differently, needn't agree with his opinion.
Different observers can disagree on the sequence of events, and an event in your future could be in some other observer's past.
A person can reminisce about the past, and another person can be waiting to experience the same thing, but this has no relationship to living in a block world with different futures or pasts. And it certainly can't be proven. It's all gobbledegook.
But who am I to change your stupid beliefs?
You? You are nobody, as am I, and as is everybody else. The arbiter of which beliefs are stupid is REALITY.
Yes!
That which we can test and observe to be false is false. That which we continue to believe after it has been shown to be false is stupid.
Please remind yourself of this from time to time.
Nothing else is stupid; reality is often counterintuitive, and occasionally absurd.
True. So why not give the author a chance, which you have failed to do.