The spike in sudden deaths of young adults in 2021-2022 for many, is pointing the finger at the Covid-19 vaccine, as it overlaps in time, the inexplicable rise in mortality. Was that a significant factor?

There are some deaths resulting from physiologic changes, but these are not huge numbers. Any loss of life is most unfortunate, and particularly when vaccination of the young is not really necessary, given that Covid-19 is not particularly lethal except in the ill or elderly, or those with a compromised immunity from some other factors. So that is a red herring and will be used as fodder for political attacks, fear mongering, and the sowing of discord and confusion for some time to come.