I don't know. I've been silently outraged and disappointed by this whole forbidding of unverified apps, but also hopeful it wouldn't affect me much as a user of grapheneos.

But this process seems pretty reasonable to me.

I'd like to think it is due in part to the efforts of F-Droid and others.

Waiting a day, once, to disable this protection doesn't seem like a big deal to me. I'd probably do it once when I got a phone and then forget about it.

I happen to have developer mode enabled right now, for no good reason other than I never disabled last time I needed it. Haven't had any issues with any apps.

I actually think these protections could help mitigate scammers.

It's not directly a big issue for us technical people and our own individual usage. Telling people about F-Droid, NewPipe (& forks) or secuso apps will be a pain. People will find free software / software not approved by Google complicated or suspicious. It is a huge issue, and even for us in the end because it hurts the software we love.