which is more respected than Türkiye
Pinyin is finally used by Americans but they omit the tone marks.
I think keyboards really affect our usage of accent marks. It's a lot easier to type without the accent. Especially on a physical (English QWERTY at least) keyboard there's no way to type the accents other than remembering the alt codes. Touch screen keyboards definitely help by making it pretty easy, but I think the largest effect would come from autocorrect changing it by default. I think there's also a bit of a stigma that makes going out of your way to use the proper accent seem "pretentious", which autocorrect would also help with.