Let's say further I get some mechanical turk like crew to monitor (stop laughing I can hear you ..) w/o telling them why I am doing this. I social engineer the reason and pay them to tell me for 'market research' etc or some other stupid cover story.
Anyway my point is that you had said you didn't care if people heard what you are saying. That assumes then that you think it's possible for someone to hear you and gain access. Now you may be thinking that person is not close enough to do you harm but is that a safe assumption?
At the office we have a full NVR system and multiple cameras. Fwiw the professional installer left that wide open to the point where we don't even allow any access (other than the stuff that the Chinese have already enabled that probably is sending things out). The default setup was insecure out of the box and nobody has had the time to look or lock it down.