I've had crippling chest pains and ended up in the ER after a heartattack-like symptoms later to be determined as "spasms with unknown cause". My cardiologist can't diagnose it, says he need and MRI which I would have to pay for out of pocket.

3 months later and I can do some degree of exercise but not the same amounts as before. I know more people, that I meet in person, with similar symptoms, just lesser degree and they have recovered faster. A couple fully.

There is definitely something going on here that is not being talked about because it's inconvenient. It's unnecessary as it only happens with one specific type of vaccine applied to a specific part of the disease. The effects last long enough that it's worth being cautious.