Camping, in general, is not against the rules.

Camping excessively is against Gungame server rules (number 4).

Considering the fast nature of GG, a timer would have to be set for something like 30 or 45 seconds for a player to stand still too long but not be afk.

There are servers that have anti-camp installed, yet I go by a 3 strikes rule. 1 round of hanging out somewhere is no big deal, 2 rounds is excessive, 3rd round I punish. This way, there is no doubt the player in question was excessively camping.

Now I've lamented about this before. The spoken rules have become so contorted that you can barely recognize some of them anymore, but I'm pretty neutral on the whole burn, beacon, slap, whatever on a camper. If Zero decides to install it, cool. If not, no big deal.