A lot depends on using a national keyboard. I use ABC - Extended as my default keyboard and turn off long press because I don’t like it, since I’d rather type ş with opt-c s and ñ with opt-n n (I’d say I type maybe 85% English, 14% Spanish and 1% Czech or Slovene), but some people prefer national keyboards for non-English which make diacriticalized letters more ergonomic at the expense of making some punctuation or symbols less accessible (I was just talking with my ex-wife who writes a lot more Spanish than I do about convenient/inconvenient keyboard layout changes—she uses the globe key switching which I avoid because like long press, I don’t like it, especially since I use it often as a fn key and the other functionality often get triggered by mistake until I disabled it).