It feels like it’s really getting out of hand and the language of the negative reviews seems really fake too. I just bought a game that got review bombed and it was fine. From the reviews it sounded like it was going to destroy my graphics card, corrupt my hard drive and be full of bugs. Luckily I watched some gameplay vids and it turned out none of those things were true.
The graph will also give you a note that the review behavior is unusual and that there may be review bombing going on.
I think the biggest problem is that when people are just browsing games, all that’s shown is overall and mixed reviews. They should add a similar indicator to that view of the game.