The problem is there are many countries where it is not feasible to get the phone to an authorized repair center, what do you do then?
Or what do you do when you are traveling overseas and Apple won't fix the phone because the phone is from another country?
If my camera breaks down overseas, I buy a cheap one for the trip and get the other one fixed when I get back. I don't have time or inclination to chance a repair in dodgy place, or wait out an official repair.
If I live there, well I then try to repair it in country at a appropriate store, which takes longer.
Most of the countries were there is no Apple repair places are not places were they probably don't sell phones either. Got that. So, the phone came through import, travel or immigration. For all products, that usually limits your fix options a lot; not just Apple.
In the countries were almost all Apple devices are owned,
they'll be an Apple repair place so you just built a big straw man.
Even in Macedonia, the place the dumbass was, there was an official place to repair his Iphone.
If someone is abroad for a short time, most people won't get their phone repaired anyway.
In those few % of countries with no official repair place, if your there for a short while, buy a burner phone (or whatever's needed to fill a short term need) and repair the main one when you come back. And yes, I've done that for many things, including cameras, phones and all sort of other equipment.