I don't care if anyone has a Xiaomi, Oneplus, Samsung, etc. Each brand is using a modified version of Android, and they chose to be compatible with each other. But for example the "blue vs green bubble" drama is a thing specifically because of Apple locking their unsuspecting users into a closed ecosystem. And it sure isn't Android's fault for not being compatible with it.
The more power a company like this gains, the worse will it be for the whole industry.
I once wanted to repair an older Ipad because the screen was cracked. The repair would have cost 600€ at an Apple reseller. A new Ipad would have been about 700€ at the time.
There is a reason why Apple is so against the right to repair.
Even their "self-repair" option nowadays is a load of bollocks. You have to rent the expensive machine, order a new part (which can only come from them of course), send out your part and wait before they will send the replacement part, then hope you don't fuck up slightly, causing you to break the screen and you having to pay through your nose again to order a replacement.
So it only costs slightly less, but you will not have a phone for weeks.
There really is no reason third party hardware can't be installed at the users own risk. But that would mean competition for Apple, and they don't like that.