Bucks, no-one said it would be the end of the world. I know David Cameron made the silly suggestion of WWIII starting, but that wasn’t a serious point of civil discourse since then.
The problem is that things you once dismissed as project fear (the need to stockpile goods, the NI border issue etc) have come true, so you can’t just dismiss them as acceptable downsides when you once ignored them and said they were nonsense.
It would help if you engage in the actual points when debating, instead of engaging in what you accuse others of doing, in disregarding all points to you as inherently false based on a black and white viewing of the world.
