How would you like to end up on a few thousand ignore lists in a week because Goons posted your name in their "Boot this player to antisocial!" thread? And then FD acting on it?
A recommender system would be much harder to game than a simple voting system. The technology is pretty mature now and there are off-the-shelf packages Frontier could just pick up and use. To see how that might work, imagine you ignore your arch-enemy for throwing open his cloak and exposing himself whenever he's about to do his special move, and the game tells you "players that ignored Mumm-Ra also ignored Slithe and Jackalman, click to ignore them as well". That gives you the convenience you want, and doesn't pollute your ignore list with people randomly ignoring anyone they're told to dislike.
Incidentally, reading through this thread it feels like there's an elephant in the room. Sorry for the personal question, but could I ask about how you play in EVE? It sounds like you're interested in the challenge of the high-level rules lawyering side of the game, and I think uncertainty about that is raising a few hackles. Letting everyone know where they stand might help smooth out the conversation