@phisch First it‘s bad from an accessibility standpoint. Unusable with Screenreaders. And it’s bad for readability for people with impaired vision (too small, reduces letter legibility). It is not logical or consistent (sometimes it‘s the first letter, sometimes not). Then these are shortcuts that are not unique (the same letter has different meanings in different menus). It blurs the line between information element and command. Just to name a few points.