> My cardiologist says that without an MRI he can't diagnose me and my insurance did not cover it. It's quite likely imo that there is a relevant diagnosis not being made because it's inaccessible.

I would suggest you report it to VAERS, but everyone's decided that data should just be ignored so what's the point?

Nobody says it should be ignored. You just can't take the reports at face value and use any loose connection to a condition as proof positive that the condition was present and associated with the vaccine. It's meant for identifying possible correlations for further study, not relaying the true rate of events.