Regarding the Thiel speech you linked and Trump in general, those are absolutely real and troubling issues for our country. Donald Trump does not offer realistic solutions to any of them. The only thing on the Trump platform remotely resembling a plan is making all health care insurance providers compete with each other nationally. Or as Trump says, "I'm going to remove all the lines, it'll be fantastic."
Thiel's reason of "Trump is an outsider" is not enough for me.