Plinkett is saying that my brain noticed that the animation correctly accounted for the movement of the lamp. That is not an argument against not bumping the lamp in the first place.

I'll bet dollars to donuts that Howard the Duck, Waterworld, and every other big budget bomb you can think of has a lamp bumping in it. They were wastes of money in those movies, and if those movies had been successful like Who Framed Roger Rabbit, they still would have been wastes of money.