I don't care if someone sets up a Discord where they can control and steer the narrative. IOG already has one, Intersect already has one, CF already has one. When people try (and we've seen this a lot over the years, not just recently) to steer the conversation into those channels (just take it to DMs instead of public arguing on YouTube/X/etc) it's never the fact that we're discussing some debatable point, it's that the conversation has moved from constructive debate of the pros and cons of an argument usually into personal attacks or petty tit-for-tat. That's what gets the headlines, the sensationalism that boils over the top.
If people are going to screenshot it and drag it back out here to Twitter anyway... What have we gained? Twitter will miss the context and the nuance (like it usually does anyway), but it will never see the good, only the bad when someone wants to air dirty laundry.
Twitter is the platform where Cardano has the greatest reach to the outside world, if we close that off then we're doing ourselves a disservice. "Training" the community to do better, be more respectful and moderating their own Twitter timeline will go further than asking them to no longer engage.