Well, the Covid king, Dr Fauci has come clean and said it: you use lockdowns to get people vaccinated. And it is true; the lockdowns made people so vulnerable that some would have done anything to get back to the pubs and clubs. I have seen it personally, in my own family and former friend network.
https://summit.news/2022/04/14/video-fauci-declares-you-use-lockdowns-to-get-people-vaccinated/