I definitely think after the Boomers are gone, every Republican who stood with Trump is going to be on TV crying about how hard they fought against the orange beast, about how they suffered in silence and prayed every day for guidance, and how now it's time other Republicans stand up for what's right. It's going to be super cringe.
But this will only happen if we're able to hold on to our Democracy long enough for the Boomers to die. There's a real chance that won't happen and we'll end up with a Dictatorship.
So yeah, we can't just wait until Trump no longer has power. We need Republicans to stand up to him now.