That's about $675k/year, assuming a 35% tax rate. I think that is a small fraction of HN users, but more to the point, if your argument is that the phone is not expensive if you make over $500k/year, I'm not sure that is a compelling argument...
The correct price comparison is between an iPhone Pro and an iPad Mini, in the US that would be $1199 + $599. So for an extra $200 you don't have to carry and charge 2 devices. Not a terrible pitch.
Sure, I guess, but I don't have a Mini, or any tablet for that matter. I used to and found the form factor didn't meet my needs. I'm happier with a phone and a laptop.
Plenty of people on HN earn that much money in a single day after tax.