> There is no equally valid argument against man-made climate change, evolution, gay rights, the right for people of color to exist without harassment, or Ukraine defending itself.

While I somewhat agree with you, a discussion is good and necessary. Without such a discussion the subject becomes a dogma, not something reasonable. When someone is against evolution or, say, GMO they most often don't understand it. When they learned how these things work, and maybe making some experiments themselves, they can either accept the facts of decide that their beliefs are more important than facts, which is their fair choice. If you take away a discussion, you eliminate that possibility.