Most of us know this member for trolling and posting negative comments but that is a part of forum, and I don't want bitcointalk to become eco chamber without any criticism.
I believe that franky already have some limitations on his account and I think that is enough for now, there is not a single valid reason to ban him, especially when I remember how one moderator banned Nutlidah and chase him away, probably forever.
BlackHatCoiner, if you have some personal problem with franky than just click magical ignore button and his posts won't bother you ever again.