I think the please Xi send the nukes/let's sink England beneath the waves style bits started off as ironically mocking the sort of conservative commentator who responds to hearing about the latest islamophobic consent manufacturing by saying we need to glass the middle east, but like any bit that goes on long enough, the irony slowly drained away and we were left with something that was arguably reactionary and if not then at the very least defeatist.

I wrote a longer thing about it here if anyone's interested.