This slippery slope argument is garbage and YOU are a piece of shit for advocating it! You must watch Fox news and are a devotee of "shock jock" radio that tickles your reptilian brain and amps up the right neurotransmitters in the risk reward system to crave impolite and rude behavior!
(I hope I drove home the point with that bogus rant that individuality-through-angry-shouting doesn't elevate the debate at all, it just incentivizes the other party to become even more recalcitrant and unreasonable)
Hot tempers and passionate are not the problem. Strongly worded rebuttals are not a problem. Direct ad hominem attacks are just unnecessary. You can be strong and aggressive without telling people to "SHUT THE FUCK UP"
Trust me, being a dick isn't only way to be adversarial.