In one of his autobiographical books, Richard Feynman has a passage in which he says that one of the best things about being at Caltech was the constant interaction with other talented people. The practice of science is much more collaborative than popular 'great men' hagiography portrays it.
I have no doubt at all that there are many examples where forced collaboration has been counter-productive, but the successes of modern science suggest that this article is completely wrong about the optimal conditions for creativity.