Most of us fly to 6 continents with different ATC wants and wishes....some more picky than others.
Problem is, each and every country (and, to an extent, unit) has their own rules - which, in certain parts of the world are a) written by cretins and b) enforced, to the letter, by the same cretins (and their minions). Little leeway exists. It's nothing to do with being picky!