Again, what you are saying is not to trust them, you are saying to accept them without question because they are scientists. Science by its very nature is critical, you're not supposed to accept something just because another scientist or authority in your field says so. You can hopefully trust that another person performed their experiments and documented their conclusions, correctly and accurately but you still need to think critically, poke holes in the theory and question it. Galileo and Bruno might also have some thoughts on this particular issue.
And you are posting seriously outdated information - it is undisputed now that the COVID vaccines don't prevent infection or spread (although IIRC they do still reduce viral load after infection), so achieving herd immunity through vaccination is impossible. Higher vaccination rates do reduce the incidence of death and hospitalization, which does get you to herd immunity in a less damaging way and is a reason why they should be encouraged. Even if in theory we were able to vaccinate the entire world in the short span when the earliest strains were circulating, you'd still end up failing to achieve herd immunity through vaccination because this virus is endemic and evolving independently in animal populations.
I have not seen any evidence that myocarditis is 40x more common with COVID than vaccination. This is a legitimate concern which is why it is being investigated to determine if there is a causal relationship.