“Unintentional design” is not design, which is why I specified it was a byproduct - an unintentional effect. You can complain all you want, but I clearly stated it’s the result of a playerbase that can’t handle cooperative content, not Blizzard’s design. Blizzard can’t correct emotional immaturity.
You can’t blame others for your improper use of terminology to attribute fault to Blizzard’s development team when this is something out of their hands.