Another counterexample: I didn't follow the "article" link either.

I did look up the paper quoted (Nijstad et al), looked up and skimmed through Diehl and Stroebe 1987, found two blog posts by Scott Berkun discussing brainstorming in a much saner manner, and overall updated somewhat away from the belief "brainstorming is a valuable part of a decision or design process".

Then I came back and downvoted the OP, for approvingly quoting someone who spins "brainstormers in groups produce fewer ideas than individually" into "all group work is useless", then non sequiturs into rant mode.