I do not need to trust Donald Trump in the same way I would have to trust Hillary Clinton were she elected. The reason for this is very simple: Trump represents the GOP brand, and Clinton claims the mantle of progressive. If Trump fails to accomplish anything in office, or if he manages to do whatever damage he can do, he will represent the Republicans. Moreover, rightly or wrongly, he represents America’s crypto-fascist element. The best way to discredit both of these groups is to let them fail on their own. Trump will not succeed as a president.
On the flip side, if Hillary Clinton screws up by compromising too much (which is likely) or doing too little (also likely), progressivism will take a big hit in the public eye, which is something we cannot afford.