No one said you don't have the right to be arrogant and mean. People have just suggested that maybe you should reconsider exercising that right in this case. Personally, I don't care if it's Wilomn or some dude who joined the club three hours ago, if you have the ballpythons to say, "I'm calling you out..." then you need to be prepared for a reaction, whatever it may be.
One of the lessons you should take away from this is that respect does not necessarily equal "like". You called out a respected forum member. As you've witnessed, people will defend a person they respect more passionately than they will defend a person they like. At least people of character will.