Getting thrown into experimental matches

What is wrong with that? Once in a while I get into a game that is a total disaster either for my team or for the opponents. I am not talking here about the usual broken match making system, I mean total obliteration, game ending with 5 levels of advantage on one of the sides.

Then, after the game I am being asked: How much fun did you have last game? Or How fair was last game?

What is that? Do you run some experiments and then adjust the already broken mmr depending what people will answer? This is such a horrible decision. I hope that stuff serves no purpose at all.