When I looked at them, the gladiator one, I think, was actually upvoting some accounts, so it could be the intent of the owner(s) to build the accounts like that. The problem is, if they start posting or commenting, they can be flagged. As far as I know, before that happens, they can't be flagged. So, it would make sense to avoid any of that and try to grow by curation. Of course, that's going to take a while, but if there's some STEEM that can be purchased, or it somehow get delegated, problems would soon arise. Personally, I'd rather they be dealt with now, when they're small and only a nuisance, than try to take them down later when they're bigger.
Some people just love to wallow in the inanity. :)
That they do. Let's just hope this gets resolved before it becomes a serious issue.