I didn't mean to minimize your friends' experience with a giant Skepty McSkepterson smackdown, and I apologize if that's how it came across. It sounds like it's an awful situation.

For the sake of clarification, I was more meaning to say, for the benefit of others, that we need to be cautious about extrapolating from stories like this. Because, where it's a global pandemic affecting 7 billion people all at once, even the unlikeliest of outcomes are guaranteed to happen. So we can't necessarily collect stories from a bunch of different individuals, connect the dots, and expect the result to be an accurate version of the big picture. Perhaps prior infection confers imperfect immunity, perhaps it confers none at all, perhaps it's better than any vaccine. I'm not sure we know yet, but I am pretty sure that your experience is compatible with all of those possibilities.