Why do have such a strong opinion on things you –rather obviously– understand very poorly?

Why would grandma need to specifiy the locale?

Yeah, maybe figure this one out for yourself to get you on track for learning something.

someone spontaneously brings up non-latin alphabets as if they are equivalent to case sensitivity for no good reason

That sentence makes no sense. You don't have to agree on things, but at least be coherent in your objection.