I am confrontational and critical person of all media I consume, and I do have a tendency of not shutting up when I am advised to. So my ban steamed more from a continues build up of me constantly calling out the game when it implemented something I am not a fan off, rather than it being just one time thing.
As for what broke the camel's back, it was in regards to Ryn and how her love confession was handled. Basically, for her to confess her love to you, you or Elthara need to bottom to her and there seemingly will not be any other way for champ to gain such a opportunity. I find that questionable for many reasons, main one being it reduces Ryn love arc to a single act rather than gradual build up. Nothing else you did for her matters, which just rubs me the wrong way.
You can find the whole conversation on forums. I went by the name Animalistic.