I haven't taken action because I haven't been directly involved in a game with PX like this last one. Also because I expect you guys to create the environment and standard you want to play in. If you guys consider fakeclaiming as bad play, then you lynch the players who do it until it no longer happens. If you don't take such steps yourself, the people who do it take it implied that it is okay to keep playing in that bad way. Lurking is in the meta and it's up to the players to punish or encourage it. As the mod of RPG, there is no basis for me to take action on how a person plays the game.
But as a co-mod of the game, I said in the QT that PX's level of activity is unacceptable. The consensus is that he gets carded. Personally, I'm not interested in letting him join my mafia games or the mafia games that I'm party to running. If people still want to let him play, then I think it needs to be at the consent of half or more of the signed up players.
I'd like to hear from Hourai about what happened with his activity seeing as he was also on modkill threat. Prior to that I was getting the odd thoughts or comment about the game from him, which at least notified me that he was still trying to participate.