I went from an iPhone 13 to a Pixel 10 Pro Fold running GOS and couldn't be happier. Everything that worked before works now; my only complaint is that the Android Oura ring app is sloppily-coded compared to the iOS version. Not GOS's or Google's fault.
The phone itself is great. Having a huge screen in your pocket is very cool, and it's the first foldable that's actually durable. The improvement to notification management and the quality of gBoard compared to iOS is mind-blowing. Apple's software team is just asleep.
Use BlueBubbles or OpenBubbles for iMessage; with them, nobody in my social circle even knows anything changed.
Oh, edited to add: you can do Facetime via Vanadium. Any iOS user can generate a link, and you can join via the browser. My wife and I use it all the time. BlueBubbles even does a clever trick of generating a link on the fly so they can just call you, it'll generate a notification, and then pop you right into a browser to join.