These alt farmers are destroying the environment of the forum and abusing bounty rules.
Their activity is mostly contained in bounty section so I don't see it as a huge problem, at least not for a forum as a whole.
So I think we could discuss a solution on how to get rid of these alt farmers or at least demotivate or force them to work fairly. I am giving my opinion here and you can leave your opinion too.
Since theymos is against newbie jails and forum staff don't wanna meddle into all this, the only ones who can actually do something about it are bounty managers but they won't do anything because its against their own interest to remove alt accounts. I would advise you to stop wasting your time thinking how to solve this as nothing can be done about it.
Do users control accounts upto 10? For what purpose and how do they manage it. There's no how a user can complete posts on 10 accounts without using a bot. Aren't they required to make posts?
I do think that its possible to maintain 10 accounts in signature campaigns even without using bots. Keep in mind that we are talking here about altcoin campaigns so if you don't care much about post quality (and I doubt that altcoin bounty managers check those thoroughly) I am sure that you can churn out few hundreds of posts each week.