One thing I forgot to mention in my previous post: the FC of that cockroach has 9 characters.. since you can have a maximum of 8 that means that there is a backup character in that FC who can pick up all the Gil that they have been botting and hoarding for the past few months from the company chest which I suspect they keep all their gil in..
So even if the good for nothing dipshits take an action and terminate the account, the cheater will keep all the gil and pick up from where they left with the second account, and they can level up their crafting job in a matter of a week since its so easy now.