Association between myocarditis and COVID vaccines is actually quite well established in science already, only the estimated incidence rates vary - sometimes quite widely - from study to study. It might be a low risk, but it's still a risk, especially in young men, and it absolutely should be taken seriously, and such findings should influence public health policies. For example, in numerous studies, the risk of myocarditis in men under 40 after vaccination with Moderna was estimated to be higher than their risk of myocarditis from COVID infection, so it's pretty obvious that for this demographic, Moderna is not the best choice of vaccine and shouldn't be used (and several countries already banned it for under 40s for this specific reason). Similarly, those who experienced heart issues after mRNA vaccination, should be offered a different kind of vaccine (virus vector, protein subunit, etc) for their booster as a precaution instead of dismissing their concerns.
Honestly, I find both extremes equally annoying - those who actively advocate against vaccines and encourage people not to take it, and those who vehemently defend it and refuse to consider the shortcomings and potential dangers of it. It's clearly helpful in preventing severe course of disease and deaths, and it also clearly has shortcomings (lack of protection against infection and transmissibility, for example) and potentially serious negative side effects for certain people (myocarditis with mRNA vaccines for young men, CVT & VITT with viral vector vaccines for young women). Research is still ongoing and will be for years, there will likely be new findings and arguments for and against, so to me, it's an extremely weird hill to die on. Just a few days ago, there was an editorial in BJM (British Journal of Medicine) calling all vaccine manufacturers to make their data freely available publicly for independent analysis - which is definitely a very reasonable thing to ask, given that the data is supposed to be behind major public health interventions, and yet it is still not accesible for researchers, doctors and the general public. Well worth a read: https://www.bmj.com/content/376/bmj.o102