I think that's a pretty weak heuristic, and you'd be venting yourself the chance to work at quite a few excellent places to work if you poo-pooed them because

I think that's a pretty weak heuristic, and you'd be venting yourself the chance to work at quite a few excellent places to work if you poo-pooed them because the developers don't all run Linux. For me, though, if they won't let me run Linux, then I won't work for them.