I saw this on the degoogle sub and was a little suspicious.
First because I’m still getting the old captcha puzzles so far on /e/ with MicroG. And also given how the developer verification issue has been a bit exaggerated in posts (not that it’s not bad, just that it’s usually presented as if there will be no way to install unverified apps, which isn’t the case).
Anyway, did a bit of digging and the Google site implies that the QR code thing will be one option for website owners alongside existing verification methods. The screenshots still show an icon for an audio challenge (which I suppose they have to include for accessibility reasons)- so maybe this will either be easy to circumvent, or at least only apply to a few websites?
Also, I wonder if anyway the QR code will work if you have MicroG. I see on the Graphene forum they are saying it works with sandboxed google play if they enable certain conditions.
Any ideas?