Thiel sees Hillary as a bigger threat to his interests than Trump. To prefer an outcome does not imply you favor all aspects of that outcome. As arrogant and simple-minded as Trump comes across, he didn't stay wealthy without delegating his authority, and there would be violence to no-end if he appointed racists and sexists to high-level positions. That egomaniac ultimately seeks admiration, and the threat of "deporting illegals" was most-likely (you never know and that's why I'm not voting for the guy) a strategy to get the nomination.
Instead of Thiel, we should be admonishing our media, which couldn't have hand-picked two more controversial figures and allowed themselves to be manipulated at every step. We should be admonishing Hillary and Trump supporters who turn a blind eye to their unethical tactics and ends justify the means mindset. The ends (aka political payback) usually just result in more corruption and more things to fix with government. We need to stop this cycle. We can start buy turning off the TV, and considering a third party.