Looks like Google is calling it Play Integrity these days: https://developer.android.com/privacy-and-security/safetynet/deprecation-timeline
But it’s this: https://developer.android.com/google/play/integrity
It’s an API that ensures you’re running apps on the hardware and Android ROMs Google approves of. It can also ensure that apps are not running on rooted phones.
Developers can integrate it into their apps. Banking apps do it, for example, and won’t run in Waydroid as a result. More and more apps integrate it over time.
Easy to say when you aren’t facing the threat of bias intimidation or hate crime by recently emboldened bigots, things that actually happen unlike the caravan paranoia.