In terms of its appropriateness, I guess that's debatable too. If me and jusben1369 were having a chat about this person to person, I'm sure we'd know that its a hearty debate and we could debate the merits of our opinion while still respecting each other and knowing that we have differing viewpoints. Not to say that this is always easy to do.
With only the written word, I guess these types of comments can be seen as verbal jousting. If this is viewed as such by everyone (especially jusben1369) then this was not my intention.
The sarcasm seemed to be based on the fact that you can agree that truth is good and falsehood is bad and not see that as a reason to dismiss the Guardian piece.
"Opinion piece is misleading because it isn't a factual non-biased piece of journalism" seems like one of these times.