In simpler words, the ends justify any means.
What they do not understand, but should from history since this has been the mantra of every dictator and strongman throughout time, is that eventually the dictator will come after them and their families too and there will be no one left to protect them.
Because Trump, like all authoritarian leaders, is not acting for them, but for himself. He has fooled them into believing it is in their best interest, but that is just another of his lies. He only cares about his own best interest. And when that conflicts with their best interest, guess who gets rolled under the bus - hint: it is not him.
If people are dumb enough to fall for his lies, as AF says, they deserve to reap the consequences of that choice. Unfortunately, this choice impacts us all and we all have to deal with the fallout from such idiocy and ignorance.