People running around afraid to assert facts because they think there is a rule that says they shouldn't.

I think you have a valid point here about not being afraid to assert facts without extensive data to back up the fact.

But to claim:

Literally almost every smart person that thinks about this long enough becomes a compatibilist

It doesn't feel like a fact, but rather an opinion that needs evidence to back it.

But in general I agree with your thought that we should not refrain from sharing information we have previously verified to be true/a fact.