The ICU Team are looking at it and they are getting banned.
I went through my ignore list searching Every.Single.Account on the highscores and removed the ones that were 'removed from highscores'.
The Red Square on the right shows all the accounts that were reported in the past and that currently remain on my ignore list, and I decided to do a larger check today, and well yeah.
They are banning some accounts.
I have no proof these are bots other than the stats and that they're 'camping' Zulrah and I could be wrong for some accounts.
Jagex. You shouldn't have to have your paying customers (playerbase) reporting these bots for you.
Edit: JUST REPORT THEM.
If there was an incentive to reporting them besides having a cleaner game i'm 99% sure you'd see a lot more reports.