"they should encourage diversity of thoughts, political ideologies, religions and diversity of perspectives and within that diversity"

This sounds good on its face but there's a problem that keeps coming up in its application: these thoughts, ideologies, and perspectives include many that are absurd, harmful, preposterous, and willfully false yet an over-amplified respect for diversity compels us to accept them along with the others. So we get the modern dilemma of he-said-she-said and, lacking all conviction, hesitate to call out lies. This is not an issue of diversity or tolerance or anything like that, this is a disintegration of the very notion of truth, of recognition of objective reality.

The origins of our epistemological crisis cannot all be laid at the feet of conservatism, even though conservativism has never been an honest formulation and it persists in believing things that history has disproven. The postmodernist view has been at least equally harmful, maybe more because it infected those most likely to know better with a reluctance to trust the evidence of their senses and, worst of all, an absolute terror of being perceived as judgmental.

"That's an opinion."

Maria concludes: "conservative ideas should also be accepted"

No, they should not. Its few ideas that are not simply insane are mostly falsehoods. They are harmful to the world, human and natural, and they are cruel. Conservatism needs to be crushed.