Indeed, que sera, sera. I was never really surprised by "Brexit", only by the way it was done (what a disappointment, it really shows no country deserves unconditional respect, ha!) and the fact that it's still a huge issue two years after...
It's a long and not at all an amiable "divorce", but that was to be expected.. I don't understand the anger and the accusations towards EU. Each party tries to protect their own interests. There are tough negotiators on each side, but it's the EU who has a (much) better leverage. It's like in almost every other situation but people became acutely aware only now. Call it "bullying" if it makes someone feel better (isn't it always "bullying" when it happens to us?), but it really is... business as usual.
Que sera, sera.