Funny enough that’s… actually entirely a reason to ban people. Says so right in the rules for the forum, which you agree to abide by when you join the forum. It’s very rare that actions outside the boards would be taken into consideration when it comes to the boards themselves, but Double’s not a special case in that regard either.
Rule Index: All Rules Here - Site / Rules and Guidelines - The TTV Message Boards (ttvchannel.com)