Starting in August, installing APKs from unverified developers will require a new procedure called Advanced Flow. It involves enabling developer mode, rebooting the device, and waiting 24 hours with biometric verification.
After that, you choose: allow the APK installation for 7 days or indefinitely. The procedure is a one-time process and applies to all versions of Android.
Will the 24-hour wait stop you from installing APKs outside the store?
I'd switch but it's not available for my Fold 7, and I don't want to get a different foldable because I like that this one is as thin and light as a non-foldable when folded. Plus I actually like the gimmicks exclusive to Samsungs (Good Lock is a game-changer). Do I even have any other OS options for this device? Pretty sure the bootloader is uncrackable due to some BS tamper-evident seal in the hardware itself.
(And no, I won't get a regular phone. Once you go foldable, there's no going back. The benefits far outweigh the negatives.)