I'm not a statistician or a scientist, but I don't it does any good to lump everything together over the past ~9 months and compare it to Influenza and Pneumonia. Just think about it. We barely knew anything about covid or how to treat it at the start of the year. Now, it seems like we have a better understanding and how to potentially treat it. Compare this to Influenza/Pneumonia, which I'm just guessing we've been…
I don't think you can lump everything together Why not? Do you think the number of previously recorded deaths will suddenly decrease because we've found a better treatment? These people died, they should be included in the statistics.
The main question for me is if someone who got Covid and recovered can get sick again. I haven't seen any answer for that question I could trust. There are some headlines from time to time "got Covid again after recovery", but given the quality of media reporting it means nothing.