You said that someone is not returning to ComiCon because they got Covid. If someone cared that much about not getting Covid, they would have masked up, right? They could have got Covid from the plane ride, or the bus, or Uber, or coffee shop, or any number of places. 😷😷

I'm not sure what point you're trying to make (and am fairly sure I don't care.) Whether they got it at Comic-Con or not, they were at Comic-Con when they had it, and thus risked spreading it. They are in either case an example of why one should mask at Comic-Con.