I caught it for the first time a few months ago, relatively fit/healthy guy and it gave me the whammy for a full week (I could barely move, didn’t want to eat at all, sweats, dizziness) I’ve never felt that bad in my life. Thankfully, no long covid here, aside from randomly coughing to clear up something left in my lungs once a day, but it put a 2-3 week sized hole in my life, it can show up with a vengeance, no joke.
I spaced out that there was a second season of Wha If… released, I’m really digging the vibe on it this year, some great episodes in there!