>(Incidentally I do wonder if Swiss German or Scotts speakers feel similarly, and if they don't to what extent that serves as a counter point.)

I don't know about Swiss German speakers, but Scots speakers tend to be fairly comfortable in code-switching between standard written English and a transliterated form of Scots.

Scottish Twitter is as culturally distinctive as African American Twitter:

https://www.buzzfeed.com/hilarywardle/get-right-inty-the-mic...

Wikipedia has a Scots language version:

https://sco.wikipedia.org/wiki/Main_Page