From what I can tell, defcon is largely law enforcement and companies that sell to them these days, so I'm not surprised at all to hear that.

I keep hearing that cynical, and wrong, dismissal but have zero idea where it comes from. Yes, there are cops. Some .govs even have booths in the info areas. The stated idea is that it's a good thing when cops and hackers can hang out and discuss ideas and opinions outside of interrogation rooms, and I agree with that.

That's miles away from "largely law enforcement" though. I talked to an FBI agent at PyCon but people aren't claiming it's a LEO convention.