Workplace dysfunction (including the blame- and accountability issues from the article) is either coming from issues your boss knows about and can't fix, or considers acceptable, and either way you better work within the given constraints. Any solution about a griefing neighboring department will likely come through some tacit reorganizations when management reshuffles.
Not saying there is anything wrong in particular with the article, or that working through the article can't help if you truly want to reform a team; however such a task will require a manager with sufficient leadership skills and intuition about the true nature of an organization. Such a manager would better not put up powerpoint slides about the difference between blame and accountability at the end of the next daily standup. It's the intangible sprinkling of management magic that makes each team member feel understood and challenged to do better, and the diplomat's skill of negotiating a truce with the enemy within the company that no systems-thinking-article can teach.