100s of millions of vaccinations have been given in a relatively short period of time. Millions of cardiac events occurred yearly before Covid and before the vaccine. You mix these 2 factors together, many events will by coincidence occur before, during and after the vaccination event. One has to be careful not to automatically connect the two. That said, it is well known that cardiac event incidence rises during acute infections and during the milieu that an infection creates in the body. While vaccination with an mRNA vaccine is not an infection, it creates a milieu that can be proarrhythmogenic. That may be the connection that some/most here may be experiencing.