copy-paste an ETH address to this group, you might get banned by the bot, not by admins. Even if you copy paste contribution address above (from pinned message), it might happen to you. It's just how our bot works for preventive measure and to avoid spams
No that's fake news, no one will ban you on bitcointalk unless you do something really really bad like scamming people or cheating bounties
Yes, you are right without cheating no one will ban you, we have to follow the Bitcointalk rules and regulation in order to follow them otherwise, they will block your accounts. I have never seen such problems raised by the people because they are following the forum rules and regulations.