Just a short post here such as "we are not a US government honeypot" should be enough to make them shut their mouths. The real CIA/NSA don't like to comment about anything, so people will notice the difference.
Denying it will just lead to this:
Exactly what Id expect an agent to say

Or use this argument again:
Just think.. In all likelihood CM is an NSA honeypot anyway, lol..
Could be..
Brilliant. Then we finally got the NSA to work with embargoed countries after all these years.
I like eddie13's take on things:
Same principle..
Anyone could be a scammer..
Anyone could be an agent..
The only person responsible for protecting your ass is YOU..