I doubt Mr. Tea is recording a demo each night and I doubt people actually review it every day.  It's not worth the man hours nor is it an effective way of administrating the servers.  It would be much more effective to have SourceTV recording demos - that way you can switch from player to player during review.

The fact is that there is a chance of losing a potential regular every time they get rejected when they try to join with an AFK, admin or not, in the server taking up the available slot.

I don't have a problem with an admin sitting in spec watching players like a hawk for hours, but when they're sitting in spec not watching players like a hawk, e.g. AFK, and the server is full, then it's detrimental to the health of the server.  Most people do not recognize Mr. Tea as being an admin, so it's not like he's a deterrent for cheating.  I'm also not trying to target Mr. Tea in particular - nor any particular admin - because he has helped me out, but he's a good example to use.