I doubt people would complain this much if they came across a weather app that is only supported in the EU or China or India. No one would say

Yet another China-only app with China-only weather, I guess, like countless others…

"Obsessing" over your icons and user interface won't make your app useful to people you explicitly do not provide your app to.

Build your own EU weather app if you care so much. No one is obligated to support their software in the part of the world you happen to live.