He thinks this is Reddit, where debate by "gotcha" is the norm.

When you comment in bad faith you get unkind responses

And when people assume bad faith, they needlessly produce unkind responses, which is what happened here.

EDIT: Nope, I checked his comments, every single one is "you clearly know nothing about <blank>" and the next one is "you clearly know nothing about <something else>". Total Hacker News Redditization happening before our eyes.