lol, it was never approved. Congress did an emergency authorization bypassing all testing, and removed all liability. Personally the 2nd part is all I need to know that I'll never take the covid vaccine.
That comment isn't as relevant as you may think... but, you're correct. And some don't even need the vaccine to effectively combat the ill-effects of the virus.
That's not how vaccines work. Viruses mutate into different variants... like how the flu virus keeps come around again and again every year.
Best case scenario: medical analysts test for the most prevalent strain and then vaccinations are tweaked to inoculate against it... and it works against multiple strains. Middling scenario: they're right and it works against the type they were hoping it would work against. Worse case scenario: they're wrong.