As of now the answer is Yes and no. I say as of now because personally i'd prefer if we restrict Wardens from doing cancer shit like this and we have been in talks about finding a way to circumvent this. If only its as easy as creating a Warden rule "Don't be cancer dude."
On certain types of colors, usually the regular 9 colors, Warden can do AFK freeze 9 colors since all of the players have a chance of winning or losing.
Warden cannot play AFK freeze colors on games that have the potential of giving the T's 0% chance at winning, such as undertale 9 colors. If warden attempts to play AFK freeze colors on these "hybrid" colors and its either crouch/ladders/lasers then none of the T's have a chance at surviving.
Keep in mind that some hybrid colors dont have commands that require T's to move, so some of these hybrid colors are allowed such as jb_august because each of the commands still give the T's a chance at winning albeit a rather low chance.