I don't think this is about punctuation marks, this is about tone. It's about "tone." beCaUse IT's aBOuT toNE. BECAUSE IT'S ABOUT FUCKING TONE!
English does a lot with how you say something. I didn't give her the money. Try saying that phrase and stress a different word each time. If you see it written down, you are missing an awful lot if you're unlucky
Air quotes don't really need an accompanying gesture to make them be understood. Giving the gesture anyways is just making sure people don't misunderstand it. And we are used to this doublespeak from our elected leaders. So adding "in air quotes" in speech and gesture is often a dig, a comedic device, and a deliberate act to fraternize with the other people who know what's up.
Bootleg records were a thing in Europe in the days of reel to reel tape as the only alternative. It wasn't so much that people did it privately but people would try to make a buck through re-sale and especially on flea markets where oversight by the law was virtually nonexistent. Rare records have always been a thing. Bootleggers tried to profit off it.
I was bequeathed my parents' record collection of about 200 LPs. One was a bootleg they kept, some rare Beatles stuff. Other ones were thrown away because the quality was bad or would have been deteriorating to a point where it became unlistenable.