IMHO, if you get notifications of apps using Play Integrity API, while still currently working, you should take this as a warning that future versions of those apps might block you for using a non-standard OS.
I got very close to finding myself unable to access several thousand dollars worth of savings when my fancy yuh fintech app was updated and decided that my phone was not compliant. Obviously, the help desk was completely useless, offering absolutely no solution to recover my money. In the end, I was lucky enough to get my money back by uninstalling the app and installing the previous version's apk.
There are more and more fintech offerings like yuh or Revolut that rely exclusively on a phone app to manage your funds, with no website available. This is very dangerous and could turn a lot of people away from de-googling their devices.