People are pissed because instead of taking the feedback, apologizing and acting immediately, he wrote comment after comment giving excuses. What he did is literally illegal, and ignorance or good intentions is not a solid excuse.

If you’d actually installed it and realized afterward that you’d been misled, whether by someone who doesn’t understand trademarks or someone acting in bad faith, you’d probably feel differently. Leaving a comment on HN in that situation is a pretty reasonable reaction.