I have seen that. I also seen people openly talking about social skills being opposite of coding skills and literally making implications about others. I have seen people pretend lower social skill then they actually have.

The most common through is assuming that someone with bad social skills is genius in coding with zero grounds for it. Without seeing code or even talking with those who know his code closely, anything like that. Assumption was that that those people are better in coding because got knows why. I suspect part of it is wish to compensate, but part is stereotype.

Open offices have nothing with it, except making people with poor social skills more actively annoying. Which can cancel some of effect I guess.