I’m not sure how you got from my comment to this, but in the interest of being clear:

Extrapolating that somebody has a positive vibe and was an Eagle Scout, so they can’t have had past hardships is radically different from “extrapolating” that somebody who uses gendered language has gender biases. The former is a textbook logical fallacy (“affirming the consequent”). The latter is not.

Cantrill's "vibe" has been controversial in the past. I wonder, while trying to be as neutral as possible, if the original commenter was actually sensing something like overconfidence or even arrogance.

https://news.ycombinator.com/item?id=19161006

Indeed. Everything points to someone who had never understood the damage he has done to others through his actions.