Color me suspicious.
If DevOps was limited to security (i.e. continuous patching of a stable base) then it would probably be a net benefit.
But that's not the case. DevOps is aimed at continuous feature release, not security. The more features you add, the more attack surface you add. DevOps encourages an insane development cadence, an insane user version cadence, and that is heaven for bad guys looking for bugs.
The real issue with rapid cadence is lack of time for testing, lack of time for the good guys to understand the code in depth. Automated tests are good for catching the known attack vectors and preventing feature breakage. They do squat all for unknown vectors. Thus all the emphasis on discovering and exploiting 0 day bugs by the bad guys.
DevOps is a prime example of over-driving your lights.