First one must assume that Trump knew the jab was NOT being thoroughly tested and that it was designed to harm.
So let's go with that. Then his thinking may have been: "Well, the left won't take it because they hate me and my followeres won't ake it because they aren't stupid sheep." " It won't matter because there are theraputics that will not only treat the most susceptible but may help to ward off getting it in the first place by boosting immunity."
he could not acoount for the absolute all in of the cabal to do what they did. Blowing out people's lungs with ventilators, the illogical step of putting sick people into nursing homes with the most vunerable, threats to Dr.s trying to prescribe theraputics, the lies of those entrusted to help the situation.
This was targeted to hurt him, the world's population is just collateral damage that still enriches big pharma because it's creating life long patients of those that survive the bioweapon.