When someone has an ailment that could POSSIBLY be a reaction to some of the medication they are on, it is reported INCASE there is a link. The FIRST THING it states on that website is that " An adverse event report does not mean that the medicine is the cause of the adverse event."
eF'head ignores that and claims that every report of a possible side effect or death in a period of time after the vaccination is directly linked to it, which is beyond absurd.
If you have tried a new heart medication and a few days/weeks later you develop a rash, that is a reportable event. Does that mean the medication caused it? Maybe, or it could have been countless other things that caused it. But the possibility exists there could be a link, so it is reportable.