Got a warning on board for calling a guy a Dumb Butt when he called me a sh*t head.Really moderator?

http://boards.na.leagueoflegends.com/en/c/gameplay-balance/VVclugF1-wait-i-dont-get-it-why-are-the-other-championship-skin-back-too?comment=0000000000010000000000010000000100000000

So I made a post just asking why was the championship for the other out while riven took 4 years, doesn't that make their skin less rare?

I was replying to a person about championship riven and this guy who had no single clue on anything about the skin said she was only obtainable on a twitch stream code.

I corrected him since the twitch stream was for a ICON not the skin and told him he should not state something he knows nothing about.

the guy ends up showing me a Championship riven special edition picture for some stupid reason I don't know why and tells me to "Get good and a sht head" When the funny part is that he had a horrible history then mine he had to dynamic duo 80% of his games to even get to gold 2 and his statement that Championship riven was only obtainable through a twitch stream code for worlds which it was not was wrong while calling me a sht head.

Please read the reply he did in the board link.

So I told this fool that he could had just screen print and paste it in paint to make it look like he owns the skin since his name is not even in the picture for shop and he was stupid as hell for telling me to "get good and a sh*t head" in the picture link when I showed that he knows nothing about how to get the skin when he shows HE OWNS THE SKIN.

So I told him to prove he owns the skin with his account name showing while in shop which he said he will but ends up dodging it saying he is in a game, after a couple of more reply I get to the point of just knowing this guy is a troll who knows nothing. After he just makes troll replys like XDDDDDDDDDDDDDDDDDDDDD I replied "^^^^ K ya this proves my point who is the dumb >>BUTT<<(You know the A word alternative for BIG KIDS since Riot can't take this word), I recommend you stop replying before you make yourself look more like a total fool." Since he called me a sh*t head

I got a warning saying I was insulting him when he called me a Sh*t head LOL.

Are you for real board moderator ?? I got a warning for calling him a Dumb >>BUTT<< when i proved i was right while he calls me a Sh*t head and gets away with it because it was a picture link?

The funny part is where he shows championship Riven and tells me to get good for some reason when he owns a skin that people could had bought that takes no skills at all to own other taking his mom credit card to buy it.