Instead of talking about the hacker community, lets talk about HN community which we are all part of.

How would we all feel if secret service people were recruiting moderators/ycombinator people that wrote paid comments and informed on the content of private conversation between founders and investors?

Personally I would trust the community less. I would expect contributions to have lower quality, be less insightful and more hostile, resulting in a general distrust that in the long runs kills the community from within.