Just because something applies some negative pressure on diversity of thought doesn't mean it necessarily "leads to a monoculture and echo chambers."

If you're in a car that's going way too fast, do you tell the driver not to touch the brakes because it "leads to us never reaching our destination?"

Anyway, we're currently seeing the reign of the "cancel culture is the big problem" crybabies. Turns out they just thought the state should have the power to decide who's allowed to have an opinion.