Well, it is open source, it has been awhile since any "official" update, proper clients are not hosted on the main site, and n00bs are pretty much told to figure it out or sod off. People are bound to start mucking about with it whilst awaiting an "official" update, while other people will just mod the hell out of anything they can mess around with, and meanwhile the player base will try anything new just for a little change of pace.
When people feel like they are kept out of the loop of what is going on, even when they are trying to be loyal to a game and show their support, they will sometimes get distracted and either warp the game into entirely something else altogether, or just go off and find some new shiny object to play with.
Human nature to mess stuff up or lose interest in it. Especially when they often feel they are being kept at arm's length. Just sayin'.
Cheers.
Anyone remember Ultra Renegades for Tribes?