Money.
Even if 5 people scream and get a refund or don't buy it there will be 100 that don't care and just pay. It's the same with every bad thing like preorder, dlc after dlc, microtransactions for cosmetics more expensive than an full title indie game or pay to win in a full price triple a game (like star wars battlefront 2). In the end the group of people just buying is bigger.
Mostly negative is a terrible ad by itself. I am buying only games with either very positive or overwhelmingly positive ratings. Those reviews are tanking their sales I am sure.
I hope so and I'm the same when it comes to buying games, but e.g. the steam charts telling another story. Most people seem to not care about negative reviews especially if it's a game they heard about before.