Not that it's a big deal, but Türkiye uses the ü, and autocorrect and spell checkers don't seem to have made the switch yet so it does require some extra effort to type or copy paste. It seem like the use of Mumbai hasn't even been universally adopted in India, so I'd expect Türkiye to take some time.

> spell checkers don't seem to have made the switch

Right click > Add to dictionary

Yeah, sure that works in the specific machine I happen to be using but this doesn't come up enough for me to remember to do it everywhere.

Iirc, Mumbai,Bangalaru, etc. were changes to decolonize, not to change the name foreigners called it as much as to change the name resonance called it.