Western Europe in general really, though specifically Ireland, yeah. It hasn't caught on here to the same degree that it has in the UK, at least not for now, fortunately (politically, it's mostly the preserve of fringe weirdos, whereas it's a major-party thing in the UK at this point), but some of the talking points have definitely come over.
As to the sudden shift in the UK, Cameron and May's Conservative governments planned to introduce self-ID (and Cameron was very noisy about the UK's high rating on LGBT rights - of course it has since slid quite a bit in those rankings...), Boris was kinda transphobic but not particularly loud about it, but then by 2022 you see Penny Mordaunt basically facing a sort of transphobia purity test in her leadership campaign (https://news.sky.com/story/penny-mordaunt-dismisses-claims-a...). It was a really rapid about-face.
As to the sudden shift in the UK, Cameron and May's Conservative governments planned to introduce self-ID (and Cameron was very noisy about the UK's high rating on LGBT rights - of course it has since slid quite a bit in those rankings...), Boris was kinda transphobic but not particularly loud about it, but then by 2022 you see Penny Mordaunt basically facing a sort of transphobia purity test in her leadership campaign (https://news.sky.com/story/penny-mordaunt-dismisses-claims-a...). It was a really rapid about-face.