bad players will be bad players regardless of whether or not they get fc or participate in book burns. rmt will always find a way to make massive amounts of gil fast and gil buyers will always buy gil.
There is no need to punish legit players for something so silly. If they go back and ban hammer everyone who ever participated in fc pts because it's what some legit players do and just by chance so do rmt, they also need to ban all fishermen, all farmers, everyone who sold a chocobo blinker to an npc, the list goes on and on.
And with the 'disruption' thing, they would also need to ban anyone who ever /sh or /y for ls members, vw pts, storyline progression pts, mercenary work (seeking or offering), or anything that required you to sometimes /sh or /y for an hr or sometimes more since those can also be dubbed as 'disruptive', not to mention the trolls who /sh or /y for hrs sometimes offering services like tele's for gillions, and esp anyone who has ever participated in the dhalmel game which is by far the most disruptive thing anyone can do in /sh and /y.
I just /blist the fc pt ppl and go on my merry way. Problem solved in my book.
