>It's not our individual prerogative
I mean that it is entirely our prerogative to disagree on whether one should recognize an expert, immediately upon engaging with them. There's nothing in the HN guidelines that indicate otherwise - unless your point is that one should have respect for the potential experience of everyone one encounters on HN, which is fair.
But I still contend that your position that we should all know saagarjhas' competence is entirely unreasonable. There are tens of thousands of such individuals here on HN, how are we supposed to know we're talking to the very founders of the technology we're discussing? Its unreasonable, but its your prerogative to make the statement, "don't argue with saagarjha, he's an expert", and its just as viable to see this is a "call to authority fallacy" designed to shut down honest, viable - and valuable - dialog that results from the challenge to this so-called authority.
In other words I don't think you're applying the HN guideliness effectively. Please let people challenge experts - its important to our community, after all.
>Federighi and Cook.
Never accept technical management from someone who can't do your job. This is Peter Principle, 101. Someone at Apple is dropping a lot of balls lately, and it shows in the very poor quality of their releases over the last few years. The notification system is entirely dysfunctional, on both iOS and MacOS - I would wager the bureaucrats don't actually use these tools.