How do you read his lengthy post and arrive at that comment? It's arguably the worst comeback that I've ever read. You've got some sort of listening disease, or reading incapability, I'm sure, because you choose to ignore everything around you.
In so many words he called you a blatant hypocrite who has bought into every piece of bullsh*t in their life, and you say, "nanana, i never paid union dues because I'm in the union". But hey now, he's the dumbass.