I'm no fan of Thiel, but don't take revocation lightly. It's basically a life-destroying event if you're not fantastically wealthy. Being stateless is far worse than having citizenship even from a troubled nation, and your proposal would endanger anyone who enjoys (or wishes to enjoy) dual citizenship.

Also, the only relevant part of that quote is " and with the intention to give up U.S. nationality " - is there any reason to think this was his intent?

Disclosure - I may be biased because I would like to attain a new citizenship without necessarily giving up that of my home country.