They rationalize no longer being able to do something they used to be able to do, for no real practical or technical reason, as actually being a good thing.
Hence the newspeak of "sideloading" being accepted as opposed to recognizing it as a frankly outrageous and capricious policy designed to encourage an unknowing and comatose userbase.
I don't rationalise it as a good thing. I think there are many things to consider when buying a phone and this is just one of them.
Lately Apple started mandating that apps like telegram or discord must make it impossible for iPhone users to see nsfw content, which has tipped the balance towards android for me. For the first time in many years I'm using an Android phone. But as I said, one of all the factors to consider.
It’s a bit more nuanced than that - NSFW content can still be shown but the app needs to express a 17+ age rating on the App Store. That’s why apps like the Reddit client Apollo[1] and Google Chrome[2] are 17+.