I think you guys could be right. I spent a few minutes trying to search for "risk of sudden death" and "covid vacccine risk" vs. athleticism, but got back only more Pfizer ads.
I should think someone is doing the study, because it is a really good question. The obvious attempt at a rebuttal is to says "it is just the fame", but I don't hear about a lot of politicians nor Hollywood actors dying "suddenly".