This reminds me of a relevant dual attitude, namely that in the sciences (or at least computer science, physics, math, etc) it is considered to be a good idea t

This reminds me of a relevant dual attitude, namely that in the sciences (or at least computer science, physics, math, etc) it is considered to be a good idea to pursue graduate studies at a school different from ones undergraduate program. (Presumably that prevents the phenomena described in the article from persisting beyond undergrad)