Because you are giving us a link that is old, but seemingly trying to pass it off as what Trump thinks currently.
Maybe it is, but you don't know and I don't know either.
If Trump has taken my advice, which I have freely given on Free Republic in the past, and sometimes I think he has people reading this website, he will shut up about the Covid vaccine.
And yes, I and others have urged this course of action in the past. The evidence indicates that at best it didn't work, and at worst, it might kill you.
A lot of people are not happy about the vaccine, and so the smart thing to do is stop talking about it and focus on other things.
Since I haven't heard of Trump bringing it up in a long time, I would like to think he saw the wisdom of mine and other people's advice.
Your opinion then is fine.