Apple still has to review and approve each single app update [0], and apps invariably tend to need updating sooner or later for new iOS versions.
[0] https://support.apple.com/en-us/117767#:~:text=All%20apps%20....
[0] https://support.apple.com/en-us/117767#:~:text=All%20apps%20....
I guess we'll see how well this ages. I just know some 18+ store is going to release within 12 months and that will truly test if Apple is just "testing for security" or not. I suppose EGS and assumedly Fortnite got approved, so that was the other hoop I worried about.
This can still potentially mean issues for stuff like Beeper and iSH style apps , though.