He's downplaying the impact the vaccines could have had by ignoring the sequence of events that led us to where we are now.
When the vaccines were first released, the Moderna and Pfizer vaccines were said to be about ~95% effective at preventing transmission, which turned out to be roughly true. Basically, the disease could still break through, but the vast majority of people vaccinated would have both a smaller chance of catching it and a smaller chance of spreading if caught. So, of course medical professionals believed that the vaccines could have gotten us to something like herd immunity. However, the rollout of the vaccines took a long time, and we had a lot of people refusing to get the vaccination. In all that time, the virus mutated, something we have known it could do for a long time, and those new variants became more and more resistant to the vaccination.
He's making it seem like the leaders were just selling a dream, when that's not what happened. There was a chance that the vaccines could have gotten us past COVID. Hell, there was a chance that early shutdowns, masking, and social distancing could have gotten us past COVID, but we botched all that. I'm tired of people talking like tried and true methods for dealing with outbreaks are the problem instead of the politicization of this pandemic and people, in general, refusing to be responsible.