Can't figure out that either
I don't think a vote for Trump comes from logic or reasoning, it is an emotional vote, similar to a teenager rebelling or experimenting with things. In most cases appealing to logic will not help.
I think everyone here can relate to the feelings that lead people to support Trump. We're all fed up with Politicians, Insiders, RINOs, etc. etc. etc.. Trump is addressing those feelings. That is where he draws his support. It is all emotions driven.