Although you are attempting to call him out for something he has apparently done against the rules, think about what you replied. Was it contributing to the topic? Was it the exact opposite from a "junk" post? Did it show any meaning? Or was it created for the sole purpose to show you had something wrong with it? If you take a look in the rules, you will realized that you have actually done exactly what the guidelines ask you not to do.
"Don't be a dick" - Wil Wheaton. (The reply was kind of dickish)
"Be excellent to each other" - Bill and Ted. (Were you excellent to this young man?)
No posting nonsensical messages. (If you believe your reply had any sense to it please elaborate.)
No "Flooding" the forum with similar meaning messages. (You are by no means flooding the forum but your post definitely did not have much meaning)
Do not create threads for the sole purpose of causing unrest on the forums. (Seems like what you have accomplished.)
Do not cause disturbances in forum threads such as picking fights or insulting other members. (It may have not been picking a fight but it definitely was bringing anyone together.)
Do not make non-constructive posts for the purpose of causing unrest. (I don't believe that reply was very constructive at all to be honest.)
This thread is a place for people to comment on his experience and contribute to the topic. Not for people to shoot it down.
Try to be more positive next time.
We are working to make this a productive and positive environment for all and the Off-Topic section must maintain these standards.