You said multiple vaccines were pulled from the market due to heart-related side effects. Both Moderna and Pfizer were never pulled, both are still available in many countries. The benefits obviously outweigh the small risk of side effects in the eyes of many regulatory authorities.
Cardio problems are a side effect of covid, so there is no surprise that it also is from the vaccines for it. What's interesting is comparing heart related issues between vaccinated and unvaccinated incidents of covid.