I would say that the data should show that EVERY single NPC and PC is using Shove all the time. That should be a clue that Shove is over represented in the game and the obvious point would be because Larian has made the action a Bonus Action.
Well, that's one of the main issues of relying just on data without keeping in mind context or listening to what people have to say, isn't it?
Another take could be "LOOK, EVERYONE USES SHOVE ALL THE TIME! This means we managed to make it super-fun!".
