Huh?

1) No vaccine is 100% effective.

2) Against something that mutates quickly the vaccine will always be behind. Thus the new variants win out. (The same thing would happen in the absence of vaccines, but it would take longer.)

The idea that it could actually be stamped out was very wishful thinking. But the vaccine does have a big benefit in reducing death.

Yeah I know it sounds crazy but that was among the misinformation being spread, and many widely believed it without evidence.