Nice straw man.

What I'm saying is:

There were no signs of viral heart damage before the booster, and then there were signs of viral heart damage immediately after getting the booster.

People in this thread don't seem to know what viral heart damage is and how it differs from heart damage caused over time by unhealthy habits. It's a one time burst of damage, unlike a chronic and progressive heart condition caused by high cholesterol, etc. It's easy to identify.

If there is damage from the vaccine, it makes sense that it would look like viral heart damage because the mechanism is the same.

I do not think the mechanism from the vaccine and an actual virus are the same...

Why do you not think that?

The vaccine produces the spike protein.

The spike protein causes heart damage.

The vaccine spike proteins may not circulate as freely or in as large of numbers as from the virus in most cases.

I was under the impression that viruses cause damage in other ways from directly destroying cells or from inflammation from an immune response.

Sure, but what I'm saying is analogous to something like, "this person has fist-shaped bruises, they must have been attacked by a human or something pretending to be a human" and you're saying "but I was under the impression that humans cause damage by killing people."

The spike protein is part of the virus. The spike protein is the part of the virus that fuses the virus membrane to a cell membrane. The spike protein may cause heart damage via inflammation.

I did some googling because I was bored and while you're technically correct you're deconstructing a complex topic down to the bare basics.