This sounds like a lot of gatekeeping. QWERTZ types need not apply for serious computer use. Even worse are those ones who would prefer to write a proper e-mail using umlauts.
Other ways to accomplish this would be coming up with macros or custom shortcuts (e.g., with one or more modifiers), to type the characters you don't have on an UK layout.
All of this is way easier to do than to fix all the 'bugs' in well established programs that have shortcuts that don't work or don't make sense on QWERTZ (or, to take it further, in the native language attached to that language - :wq should be :sb in German. ;-) )
My intention here was not to gatekeep, but to make the case/share my experience that when I first forced myself to use a different (UK [1]) keyboard layout and set my computer to English, many things that previously were cumbersome and hard to remember and did not really make sense, suddenly were easy to memorize and made perfect sense. It was almost life-changing!
Now: Should (1) it be this way, or should (2) internationalization/translation be way better? Certainly (2), but I just don't see it happen, neither in commercial (cost), nor in free (lack of contributors) software.
[1]: Don't do this, US international ISO is better: https://www.farah.cl/Keyboardery/A-Visual-Comparison-of-Diff...