I think for me repairability comes down to: how long do you think this phone is supposed to be usable? Even if you don't own it (have gifted or sold it). Probably an ecological argument there.

Primarily, given there is no up-to-date free/opensource phone OS (not to mention baseband software updates) after Apple iOS support ends... the phone can realistically only last till then unless you want to use legacy software (I have one relative who has such a device - but I'd not want one myself).