Riddlez, 'that joker' is right saying that someone who has never done re-enactment, who has not spend the hours, the effort and the money in building an impression, who does not understand how quickly a reputation of a group, a period, or a certain impression is ruined, who does not understand the politics behind re-enactment, and most importantly, hasn't stand in the field with all that work only to see people who have not spent even a fraction of your effort, claiming to be re-enactors, claiming to be historical accurate just like you, and the public actually thinking that is so, should speak so sternly against people who actually did.
While I very much doubt this guy is actually a re-enactor, opposed to some sort of photoshoot, if he were, he would be terrible. Re-enactment is portraying history. It's trying replacing your lifestyle with that of a certain period, for a day or a weekend. You do so by wearing the uniform; you do so by eating their food; you do so by copying their daily schedule and their actions. While it's true that for many re-enactors it's mostly sticks to the uniforms and drill, if you can not even let go of your modern style, there's just no reason to re-enact.