Earlier quoted context omitted.
Why you care if others get the vaccine if it does not stop the spread and new mutations as we saw with the recent variants I’m fully boosted etc. I don’t think it’s fair to compare it to Polio
It doesn't stop the spread, but it slows it and reduces the severity of the disease. Both of which help our health services to cope. You might care because you want healthcare to be available for yourself or your loved ones should they need it.
Not necessarily. Because vaccines suppress symptoms, people who would otherwise isolate in the presence of symptoms could be unaware they are infected and transmitting to others.