Witten did not "hog" the snaps, he got passes thrown to him much of the time because he was open and the other receivers weren't. Never saw anything or heard anybody on the Cowboys say Witten was a selfish player, which someone who hogs the snaps by definition is.
But that's fine, now he's gone, when Dak gets buried under the rush or has to run for his life or throws to a tightly covered receiver & an interception or incompletion is the result, because NOBODY is open, then I guess somebody else will be blamed for "hogging the snaps"...