We'll see when this rolls out, but I don't foresee the package manager checking for developer mode when launching "unverified" apps, just when installing them. AFAICT the verification service is only queried on install currently.
If you turn off developer options, then to turn off the advanced flow, you would first have to turn developer options back on.
Would apps installed from F-Droid be subject to this process, or would they also be exempt? Could that be a solution that makes everyone happy? Android already tracks which app store an app originates from re: autoupdating.
Also: Can I skip the 24h by changing the my phone's clock?
Well that's if they go through the verification process, which does not seem like a thing they'd want to do - https://f-droid.org/en/2026/02/24/open-letter-opposing-devel...
But there's been some comments that even that wouldn't be possible, every app would have to be verified individually, or be signed by a developer with less than 20 installs.
(Which of course then begs the question: Why not build a version of Fdroid that generates its own signing key and resigns every app on device?)