Interesting question for sure.
To me, playing a game without pop bumpers just doesnt feel right.
I love the pop bumper noise and randomness, the fact that it is so random and can be belted between them for 2 or 3 seconds or 10 seconds etc....
Everytime i play a game without pop bumpers, it just seems the game is lacking, it just seems pop bumpers really add excitement n extra action.