> Which matters more: rational minds, or truth?
That question is based on a false premise. Irrational minds aren't going to arrive at truth through their own processes, except by accident.
And "free expression of all ideas through current means" hasn't allowed the truth to prevail, either. It's allowed even blatant, meritless lies such as QAnon and "Stop the Steal" to become widespread and influential, supported by a whole constellation of other more subtle lies.