But do you also TOSsify the references to disco or Elon Musk? I’d argue you have to go beyond production design and see it as another universe on the shared Prime Timeline framework. Yes, all this happened in the original universe also — more or less.
I'm not sure how historical references to events and personages post the 1960s are any sort of "canon" issue, aside from the fact that, say, Watergate or 9/11 were never mentioned on TOS for obvious real-world reasons. It's certainly easy enough to rationalize that Star Trek characters simply never happened to mention Elon Musk or disco onscreen, the same way many of us manage to go entire months without casually named-dropping Joan of Arc, Thomas Edison, or Benny Goodman. For all we know, Uhura once did a medley of disco's greatest hits in the Enterprise's rec room sometime between episodes.
If Spock can mention Nixon going to China, why can't his sister mention Elon Musk or whatever? Or are we assuming that all historical records of the Bee Gees were wiped out during the Eugenics Wars?
