I agree, but I wonder how it factors in. Compare DJB to Linus Torvalds or Theo de Raadt or Steve Jobs or Steve Balmer or Travis Kalanick, as examples with a variety of outcomes (and I'm not trying hard to come up with those names; there are many more out there). Maybe the determining factor is something other than abrasiveness, maybe it's just balanced against demand for your project or other factors, maybe it depends on the market segment you're operating in - or maybe it's circumstance and luck that really matter.