Another thing. Let's, for the sake of the argument, accept that "it's not pedophilia, it's ephebophilia!" Ok? Is that not just as bad as pedophilia? Am I missing something?
Pedophilia is easier to spell and pronounce.
Ironically, the word you are struggling with is correctly spelled "paedophillia", and the first syllable is pronounced "Pee-", but most people now spell and pronounce it incorrectly, so that it is analogous to "pedometer", and appears to describe a love of feet.
Your actual point is correct though, despite your poor etymology; Those who constantly and consistently derail discussions of the rape and abuse of children with this trivia are transparently showing a worrying desire not to talk about the immorality of raping children, and no matter what words are used, that's not a reassuring desire.
The fact is that the fine details don't matter. A sixty year old wealthy man who procures a twenty year old homeless woman for sex is clearly a vile abuser, despite having broken no laws and harmed no children.
The law has to draw a line somewhere, but doing so is a compromise, and for every unfair criminalisation of a "Romeo and Juliet" romance, there is an equally unfair legalisation of an abusive relationship that just happens to be technically lawful.