It is one thing to make a judgement error in the heat of a crisis, it is quite another one to deny afterwards what a huge fuckup it has been.
I suppose you could also argue other categories based on higher or lower ages and who gave themselves lower chances of ever catching covid could technically also fall into that group. You could also argue moral reasons not to get the vaccine but I'd say in any situation where you still expected to get healthcare that detracted from the healthcare of others (i.e when the hospitals were at capacity and your treatment could kill another) would be morally bankrupt.
A preeminently foolish bet is to use a vaccine where you don't know anything about medium or longterm effects, for something that doesn't really affect you. If you know anything about science, you know that.