Brexit mostly was and remains a domestic issue which is why it's such a touchy subject on HN where there is probably a significant number of Britons commenting.
As someone from the continental Europe, this is not at all my experience, but I'm sure this depends on the specific social bubble I'm in. There are plenty of people around that had their lives complicated because of it, enough that most people I know have very strong feelings about it.
But mostly, no one cares.
The barbarians are good, loyal and brave. They don't spend their time with cultural frivolities like theater, bathing and running a shop.
Note that it's morning in Europe, and as such there will be lots of British/European people around, for whom Brexit is a bigger deal.
Similar to how broadly views on Trump outside of the US tended to be similar, when people have some distance from a debate they do tend to fall down on one "side".
I presume by "Twitter hot take" you just mean "takes I personally disagree with", right?
"I think it's hilarious that Britain will fail. Who agrees?" is not really what I consider a good seed comment. It's fine to think Britain will fail, but at least provide something for people to discuss with you.
Also the quotes are from "Blind's man brexit", and if anybody is interested, this is probably the best geopolitical book i've read so far, and it is not at all limited to the four quotes.
The quote about the colony is in the opening, and what's funny is that less than 5 pages later, Barnier complains about the English cherry picking. Is this something that's taught in "public" schools in England?
This is certainly the case in the way the EU tried to treat the UK after their own COVID vaccination programme descended into farce.