There have been some good analyses on why Trump promoted vaxxines. Ransomnote posted recently, and I posted something.
Short, very short, answer is Trump’s choices were (a) get vaxes going (that he did not know at the time of course would be as bad as they turned out to be), or have the demsheviks entirely destroy the country with total lockdowns etc even worse than they did.
I do not fault President Trump, but the demsheviks, rotten Rs, Gates etc and everyone else trying to destroy our country (and the world). We’re in a war, and war is never clean, neat or without harm. There was going to be harm no matter what path Trump took through this attack.