With staff I was more referring to any non admin level staff member as the admins are too busy according to themselves. And when it comes to theymos, it's already known that he isn't planning to do anything regarding account farmers.
I however find it not really appropriate to link him to (in your words) organised ring scamming. He knows that the far majority of the accounts posting here are alt accounts, and thus banning them won't be a good move from his point of view.
If these accounts with their connected IPs get perma banned, the forum will look like an empty parking place. If you look at it from that point, then things aren't as easy as they might seem.
It might not be a good move financially, but wouldn't it benefit the community ecosystem more? If you think that the forum will look like an empty parking space, then that's simply absurd. Plenty of guests visit here (and perhaps lurkers who do not post) and lots of individuals (without tons of farmed accounts) are active on the forum, myself included. If you clear away the farmed accounts, then that will set a precedent - and it would not necessarily have to be repeated since the owners would be less inclined to create more just to have them banned [or perhaps there could be units of evil associated with their IPs].
Even if the accounts were 50% of active members, so what? This forum was not created solely to appeal to those who want to have an easy time shitting up the place. Let me ask you a question - would you rather earn your pay working in a place built out of guano, and having to wade through a sea of vomit... or instead have it halved, but have it take place in a clean office space with plenty of helpful co-workers?
(The analogy is not the best but it at the very least creates some imagery)
Maybe a decline in account farmers would also mean a decreased payout for signature campaigns, or even fewer campaigns in general - which would probably be good. If people are interested in the technology rather than the profit (albeit small) that they can make from Bitcoin, then we would see it grow more. Who's more likely to invest in it? Some jobless person who doesn't speak English running low on cash, or someone interested in what makes Bitcoin tick? Even a little intrigue goes a long way - I read through a good portion of the documentation and guide, and it was very enlightening.