Handled both of these. I think that you should create your own thread as this is different than the intended accounts being reported. These are usually spambots (backlink spam and whatnot), while OP started reporting sig. spammers and heavy account farmers.
This does look like 2 different issuues. We are on a learning curve here.
From bbb.reporter thread,
In Oct 2015 (rough figures as guide, impossible for me to study properly) created accounts consist mainly of (or i was just very lucky to "hit" target)
Accounts between 572000 and 575000 are "btcRDkill_"
Accounts between575000 and 600200 are "MrFudged1_"
Accounts between 600200 and 625000 are "KNC_areThief"
That was a wave of spam accounts by the same person. We have been manually banning them back then (I remember having a 5 second refresh timer on the member page) and then the situation started to calm down as we've started using a bot to do it for us. They are a thing of the past (for now).
I can assure you that those accounts have been banned. Only the staff can see if a user is banned or not.
Anyway, moderators cannot ban members (because of how SMF ACL's system is build), only global moderators can, so we, as normal staff, really can't do anything. There is just one exception: Newbies. Those members can be nuked (but not banned) by Patrollers, which we have done with those MMMGlobal and KNC accounts (and of course the bot helped a great deal).
So am I assured "they are all banned"? No, they clearly weren't/aren't.
Can we have a serious explanation on "nuking" being different to banning?
We (researchers) really need to be able to see who is/is not banned.
... while OP started reporting sig. spammers and heavy account farmers.
Nearly correct. OP does not report sig spammers here, only heavy account farmers.
Heavy account farmers by default turn into sig spammers. I am not interested in non farmed sig spammers - different issue.