The stuff that I notice not working are:

* Google wallet NFC payments

* Always on now playing

* Always listening OK Google

Android auto used to not work but they added support. Voice commands to Google while driving don't work for me, but may be possible to get working.

Google voice commands work, but you need to open the Google app.

Google wallet works fine for tickets, bar codes etc, just no NFC payments.

Android song search works for me, there's a quick access file for it and it works great. I think pixels normally show what's playing on the lock screen, offline. I think this might be the same thing, triggered manually. Though I'm not sure if it's offline or not.

I'm in Ireland and any backing apps I've tried work fine, PTSB, AIB, revolut, IBKR, Trade Republic. I've had no issues there.

It's a very stable OS IMO, the extra user profiles, being able to choose whether to have Google play or not, and what level of access to give it. I've used it on a pixel 6, which died not too long ago, and now a pixel 9a.