That is a dark view that I dont agree with. We have many good ideas pitched here. Its not the forums lacking in good ideas its Bliz lacking in freedom to use the ideas or even comment on them. Dont even think a Blue has posted in a year.
Blizzard was smart to make traps meaningless because it doesnt fit this game. This is a fast paced game not a slow to a crawl and memorize the trap pattern game. ITs a type mismatch and was never going to work. Take some of the biggest hate vs POE as another example of this as the lab was one of the most hated game play and its full of traps. Traps and ARPGs dont mix and they seen this in the numbers I bet because it was changes within 2 days as I recall and we told them it was never going to work.
99% of the changes should be avoided not because there are that many that are bad but because you dont have the resources to even implement them. You have to take the best of the best to even attempt to work on but I dont think they have even done that really. Bliz devs are being held back by managers. There was a article about it in pc gamer I believe that said there is a crisis in AAA Gaming with regards to management.
It makes business sense to do what a majority of your playerbase wants even if that base is wrong. This is how the world works. This is one of the reasons food and soft drinks has dyes and red 3 was just banned. IT servers no other purpose than consumer want.