I tend to agree on that more flexible definition with a few core ingredients as baseline but it does seem to me that that core list needs to include at least one regional speciality item specific to the British Isles because I think that's what the "full" part is really referring to as opposed to just a "fry up" as the other bloke suggested. I think in general in England that's probably black pudding.
This thinking is because that minimum combination you listed is fairly common in a few places including Australia and while I don't speak from experience, I think with the exception of the beans if wouldn't be a totally strange or foreign combination in America either.
That's exactly the same time I migrated. Personally, no, I haven't noticed an uptick in that, it's just as hostile as ever. It just about scratches the itch enough to be a functional replacement for what Reddit used to be for me though so I hang around. There's solace in that it's not ALL nasty, it's just extremely likely to devolve in to that at a hair trigger and however benign or even how mundane the original topic of discussion, someone will try to clumsily make it related fascism or imperialism.