I do not understand exactly what you are getting at.
I am perhaps, like
@Reynolds said, a "smart tail", BUT I'm an honest "smart tail" (I may not always be correct, but I will speak honestly).
And I took the shot.
It was definitely not a mistake.
I'll also get the flu shot (probably this Friday at the VA).
It was not a mistake because I knew the possible side effects. I also knew the risks of not being vaccinated. And I made a choice concerning my own health.
Many who do not get the vaccine are also not making a mistake. They weigh the risks of the vaccine against the risks of covid and make their choice.