Of all people I thought PAMan would appreciate that meme because murph et al are always telling us Covid numbers are way up because people aren’t wearing masks and then he tells us flu numbers are way down because people are wearing masks. Usually PAMan does a pretty good job of trying to see things from the middle.
You've used a logical fallacy. Flu numbers are "up" compared to previous years. COVID numbers are "up" compared to what they would be in theory, this year. A clever trick, to compare apples and oranges.
Both COVID numbers and flu numbers are higher than they would be if mask usage was higher. And both numbers are lower than they would be if nobody used a mask.
In a typical flu season, mask wearing is next to non-existent. this year mask wearing is much higher than typical, so flu cases are lower than baseline. We don't have a COVID baseline but it's correct by construction - if masks prevent transmission, then transmissions are lower than they would be if nobody was using a mask.
It's pretty simple, if you got past 2nd grade math.