So that’s eriksen, and the Wigan lad, and I don’t know the covid vax state of the others…
But you OP’d with the allusion and implication that it must be vax related.
People have been dying or having heart issues whilst exercising since mankind originally existed, (our own sadly missed Foe for example).
if it can be shown that there is empirical data showing an increase in heart issues of healthy people in the last few years, then it should be examined in detail as clearly something has happened to cause a spike (if it exists).
it could be that a covid (even asymptomatic externally) infection is the reason.
Or it might be mental stress/strain caused by ‘covid’.
Or Liverpool ‘caffeine’.
Or anything… until it’s proven.
one thing is certain, if you use crap examples -eg ‘eriksen caused by vax’, then you’ll be treated with disdain, and lose any argument you’re trying to make - hence my shouting as the 1st reply to the OP.
Avoid the fiction , and you can win an argument.