The effect of this is to reframe the debate from the actual issue at hand, into a debate about how we discuss it. The way we discuss it does matter, but the level of attention that gets around here feels like bikeshedding.
Is that not "silencing" (your word) because you think we are irrational and everyone can discuss reasonable points of view without reprisal? Or is it not silencing because we choose to remove ourselves from the conversation?