It is simply unbeatable on the laptop market currently, imo.
It's true that now high end android phones are as expensive than high end iphones, so on this point of view it's not a criteria
The iPhone SE is better than any comparable Android phone and will receive updates for another 5 years.
So "You can't find a cheap new iPhone" is not true. If you're willing to take 1 extra step and get a month of prepaid service you can get a cheap iPhone.
Also, the macs are not at all locked down if we are talking about that. OSX is pretty much a general linux with a generally supported graphical environment on top.