Myocarditis-maxxies will likely never take off as an insult, but vaxmaxxer just might :) Shortness, pronunciation and simplicity all play a role.

Anyway, that statement is actually useless. The moment it became clear that some vaccine increases the risk of myocarditis, several European countries swapped them out for the less risky variants, like any sane person would.

The only people still fighting these windmills are the online kind.