Rule Question: Refusing to do RDF/DFs
So a party queues into DireMaul East. Four of the players say they need the key and are doing a key run. One player refuses to do a key run because it'll take "2 hours" and claims the 4 other people are "ruining their DF" by wanting to doing so...and refuses to participate with the group (does the jump skip trying to force the group to not do the key).
The key boss/miniboss is not a required kill to complete the DF, but is a major part of the dungeon.
Is this considered breaking the players rules by "forcing a kick to avoid the debuff" and a punishable act?
edit: also, after they queued in and refused to participate, it still took 4 minutes before we were allowed to kick them. I get the delay is to prevent abuse, but it also resulted in us being unable to continue until we could replace them.