Like HN isn't on these type of topics. Just an hour ago you said that they're trying to kill XSLT because it "not a tool for surveillance capitalism"[1]. A claim made completely unencumbered by any evidence, of course. It's little more than a nonsensical conspiracy theory.
There's a reason all the major browsers are kind of on-board with this, just like there's a reason it never got updated much beyond XSLT 1. If XSLT would be proposed today, adding it to browsers would be a complete non-starter. Newer browsers like Servo or Ladybird have not even mentioned XSLT as near as I can find. It's very low low on their priority list, and I wouldn't be surprised if at least some people working on those browsers would prefer to not implement it at all.
The funny thing about people stuck in echo chambers is that they cannot comprehend how anyone could disagree with them, so then they reach to conspiracy theories to "explain" this, completely ignoring all the technical arguments.