“Sigh” is “I don’t respect you and will now talk down to you.”
“Common sense” at least invites the question, “what do you consider common sense solutions?” and if I were to balk at that then clearly I’m not discussing the topic in good faith.
But it's just argument bait, isn't it? What are the odds that the guardrails you consider common sense will agree with my own?
It's like how 90% of people might be in favor of "common sense gun control," but when you drill down and propose specific gun-control measures, you find that it didn't help a bit to start the conversation by invoking "common sense." We're seeing the same with AI.