Banned for name

So I had a character called Emololweed, a name ive had since TBC.

One day some angry kid is telling me he will get me banned because he knows 3 game masters, I just laughed at him and went on with my game. 2 hours later my account was actually banned...

Blizzard makes sure ofc that you cant post on the forums when your account has been banned.

I now got a new account and would like to know how blizzard can justify this ban ? and how blizzard can allow gamemasters to ban people on requests of their own friends ?

Is the word "weed" bad enough to get someone banned ? or is this in fact a gamemaster abusing his powers to help out his angry kid friend ?
(A weed is a plant considered undesirable in a particular situation)

I see how people on daily basis tell people how they will rape someone's mother or worse on the trade channel and nothing is done about it, so it doesn't make sense that I get banned for a name like that.