"DPoS allows, in my opinion, for a larger degree of governance flexibility than PoW, and that may, eventually, increase the overall resilience of the entire ecosystem."

Vitalk has criticized DPoS quite heavily in one of his latest posts: https://vitalik.ca/general/2018/03/28/plutocracy.html

DPoS blockchain may turn out to be really vulnerable to gov. manipulation as they are a number of ways to blackmail/control the delegates once they're identified in the real world.