The virus has ripped though the world several times over already. Most people realize now if they are under the age of 65, relatively healthy and fit, and don't have major underlying diseases the risk from COVID is very low.
For some people, the idea of getting on a lifetime treadmill of experimental shots every 6 months for a virus that is becoming less and less lethal is not a very attractive prospect.
COVID will really start to head into background noise endemic territory now. People will get the vaccine some years simply if they don't feel like getting COVID, just like with the flu vaccine.
I just hope our govt allows us to evaluate risk on our own and doesn't try to drive towards some unachievable "zero deaths" metric.