I think the sarcasm flew over your head. He is calling out the OP as a liar. Obviously a liar being paid to lie can use the reply button, but you can't game the up votes as easily when you are a reply.

Edit: The account is old but every single post going back over a year is political. Someone else can look into how far back the account was bought if it was ever real. I only went back two pages but nothing in their post history shows any evidence of having any knowledge of the MTA or even being near NYC. People in NYC love talking about NYC