I might suggest that the title read "Group Brainstorming does not work" or "Allocated time for group brainstorming does not work"
These titles have of course a bit less of a click-bait quality to them heh.
I think it would also be nice for the article to possibly suggest better alternatives or something (aside from the one little study they present).
For the most part, I would agree with the article. And if I were to propose an alternative suggestion, assuming the intent of this article is to enlighten / teach managers, I might give the team members an adequate amount of time off / away from the office to think about the problem and possible solutions in whatever environment the individuals feel most comfortable brainstorming.
This is based on the fact that I personally know the various activities, places, and/or mindsets in which I do my best brainstorming.
The fact that a terrorism futures market was even proposed seems ridiculous to me. If even 2 seconds of thought went into that, you would see the gaping holes in that idea.