None of these behaviors are mutually exclusive. They can both care about customer experience and want to drive developers to the app store, where they will both get a cut and possibly provide users a better experience. I think that Volvo and Kia make cars that are safer than they need to be, but that might be as much in their interest as anyone else's.
Claiming that Apple is acting in its own best interests is not an "accusation". There doesn't have to be an especially negative connotation to Apple acting in their own interest, and I don't think /u/michaelbuckbee was intending to "accuse" Apple. I think they were just reminding us why Apple is behaving the way it is, but not passing the negative moral judgement you implied.
The idea is that Apple's efforts to protect user privacy online are motivated by a selfish business case towards incentivizing people away from the web.
/u/michaelbuckbee wasn't "reminding us why Apple was behaving" this way, as he has absolutely no insight or insider knowledge as to the motivations of the team who developed and deployed this feature.
