All the evidence I've seen is that the adverse cardiovascular issues seen rarely as a side effect of the vaccine are a direct result of circulating coronavirus spike protein in the blood stream. You know what causes way more spike protein to circulate in the blood stream, literally by several orders of magnitude over the course of an entire infection? Getting COVID, of course.

So if you're a mountain hermit who's never going to be exposed to COVID, then you shouldn't get the vaccine. Anyone else who even occasionally goes out in society and sees people face to face benefits from it though.