mRNA vaccines are absolutely weird and different -- their mechanism of prompting an immune response is fundamentally different as it involves prompting the vaccinee's own cells to manufacture antigens.
Even if they weren't weird and different, previous vaccine rollouts like Pandemrix show that caution is warranted in the early days of rollout for any vaccine. COVID vax fundamentalists couldn't accept that many people might reach a legitimately different assessment of the risks and benefits because in their absolutely hysterical worldview, SARS-CoV-2 was tantamount to a death sentence or lifelong disability.
Even if they weren't weird and different, previous vaccine rollouts like Pandemrix show that caution is warranted in the early days of rollout for any vaccine. COVID vax fundamentalists couldn't accept that many people might reach a legitimately different assessment of the risks and benefits because in their absolutely hysterical worldview, SARS-CoV-2 was tantamount to a death sentence or lifelong disability.