Those people usually choose politics over science.
On the political side, governments forced the vaccine on people by taking away freedoms if they didn’t get it and they often did that before there were enough vaccines for everyone.
As someone with Asthma (who should theoretically get some kind of priority), I spent two months illegally meeting with my friends because I couldn’t get a vaccine while the politicians who decided on the rules could have legal meetups because they were the first ones to get the vaccine.
And on the priority? My brother got prioritized as a high-risk patient and got his vaccine before I did. The reason? He’s slightly overweight.
Anyways, my point is that a lot of covid antivaxxers didn’t actually care if the vaccine was any good or bad, they just cared about the politics surrounding it. And I agree with you, picking science over politics always the right call.