And there are very few people around who can read all those (especially Textura) without problems.
On your other example: when I was in Russia, I found those "unknown" letters difficult, but fun. But the letters they share with Latin? I didn't see a difference.
And to your phone example: of course, I'd be annoyed. But that's exactly the point: you have to set up your local system correctly, to your expectations and standards.
I'd be much more annoyed if some web page showed an English text in some Chinese transliteration, just because the author (writing English!) was Chinese. But that's basically what you propose!
Sorry, I truly think you've run up an argumentative dead end.