From what I can tell, Graphene OS will be unaffected. Some of the app stores like Aurora and F-Droid may run into problems during the verification process. Best I can tell (and read from other sources) is an inconvenient 24 hour wait period and many have said the Graphene team will overcome that in short order.

I would say keep the faith as I'm in the same boat and have made my choice for privacy and control. Giving up everything when it could very well be a minor setback is worth holding the line.

You have been able to sideload on iOS for years; I first did it in 2021 but I think it was earlier than that. You just needed to create a server on a Mac and you could easily load apps on, all without any kind of special jailbreak. When Delta got released on the App Store, that was cool and all, but I wasn't as impressed as others because I had already been playing emulators on my iPhone for years.

Was it convenient? No, of course not, but it's been an option for quite awhile; to me the biggest advantage for Android was the fact that it was relatively easy to sideload apps.

To be clear, I don't like that Google is doing this, and I think arguing that it's for security is a half-truth at best. I could make my phone 100% "secure" by pounding a nail through the NAND chip; no one is getting into my phone after that.

With the advent of vibe coding, a part of me wonders how hard it would be to hack together my own phone OS with a Raspberry Pi or something and a USB SIM card reader. Realistically probably too much work for me, but a man can dream.