the problem with Donny is he thinks he is more interesting than he actually is. as if every anecdote about himself is of interest to the viewer.
and he does the annoying self-deprecating thing, when he wants to talk about himself without it being too obvious that it is an ego stroke, but it is always very transparent.
and his game insights are pretty generic/weak, so it is not enough to offset his personality.
overall, I am very surprised he even got the job in the first place. must have schmoozed the right person.