Because they don't give a shit about the community. Never have and apparently never will. They listen to the ass kissers who promote this mess. If you're just a player then basically it's F you deal with it.
I agree and the reason why i say that is Bungie run the game. If they are not aware what is going on then maybe they should start reading the data instead of making a mess of it. It would be like a banker ignoring the losses and only counting the gains. Or Bungie think the earth is flat, 9/11 was an inside job, UFO's are aliens, ghosts haunt us, and Bungie's make sense of their game. All fantasys.
Yep, sad but true. Their arrogance is amazing. They throw us a bone now and then (e.g. miniboss kills reduction for Solstice armor) but don't fix things that really matter, e.g. MM.