I'm not even sure there was all that much fondness there, as opposed to the mutual desperation. At the time CWC made his infamous Christmas video, Bob and Barb were sleeping in separate rooms and, even when they were awake, seemed to spend a lot of their time in different parts of the house and away from each other.
Chris? Thinking abstractly?
While it's a cute idea, the whole concept of going from Bob to "internet lumberjack" to "lumberjacks wear plaid and cut down trees" to "beavers also cut down trees" to "beavers are sort of like animal lumberjacks" to "Bob Beaverchu wears plaid" sounds like far too many mental leaps for Chris to make.
Chris bought the Fraggle Rock DVD set for himself, did a cheap copy of the set onto VHS tapes, and then guilt-tripped Bob into taking the tapes because Chris wanted the pristine version for himself.
I know, right? It's almost as if Chris has some kind of condition where he doesn't have the theory of mind to understand that everyone doesn't have the same likes/dislikes as him.