@mls14 helped me understand what might be going on:
The MAGA crowd has been fed loads conspiracy theories about democrats and Epstein for years. Now that Trump may be implicated there's a lot of cognitive dissonance. Not about rich older men exploiting underage girls per se but about their favorite conspiracy theories being not only false but implicating their favorite old rich white guy.
Because there's no way in hell I'm going to believe that MAGA give a damn about rich Christian white guys exploiting underage girls. Now, rich Jewish white guys? They seem to have a different reaction to that one.