I'm curious if we have a detailed historic analysis of the origin of the term.
If you want to do the research be my guest, but I'm telling you right now, I've only ever heard the term used to mock an Asian person's car mods.
If an x86-64 enthusiast made fun of an ARM chip by saying it was "manufactured on a crumpet substrate" would that be an insult against the British
made fun
There's you answer. It is disrespect based on ethnicity.
I never really saw the term widely used to describe a desktop configuration before here
Then you should be fine with not using the term, right? Why are you working so hard to defend a word you claim you don't see much? You have put all this effort into justifying using a word you have been told several times is racist that apparently other people don't use according to you.
It's a term used to racially exclude people by calling Asian car enthusiasts tacky posers. Is that really the energy we want to bring (or rather keep) to the Linux community?