We were at the main pool every day during our stay. While it would have an afternoon peak like most Disney pools in normal times, it was never completely full/closed for capacity when we were there. While I’m sure it’s possible, seems like it would have taken a lot more to get to that point, just judging by chairs.
Granted I didn’t feel like the resort was particularly crowded/occupied in general either.
One good byproduct of Covid is I think people are more thoughtful about putting away used towels when they leave.... plus CMs are more active with their chair cleaning/removing towels from chairs where people are lazy and leave them, so it sort of keeps chair availability open. Of course like with most Disney things that can ebb and flow a bit as well.