Joyent's decision to publicly shame one of Node's largest contributors with a passive-aggressive blog post instead of approaching him privately speaks volumes about their maturity.
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To paraphrase the saying: "don't let a perfectly good crisis go to waste."
The issue wasn't the pronouns; they were there for a long time without a problem. The issue was that somebody trying to fix them got their pull request closed with "Sorry, not interested in trivial changes like that." It was a jerky move, and a lot of people brought it to Joyent's attention since their name was at the top of the page.
Making that trivial bikeshed commit in the first place is a jerk move.