General Chat
It a shame history is repeating itself (yes the good old Sun Reader approach by management and the mods) of not being able to handle troublemakers and again taking the scattergun approach of spoiling it by just closing it.
After all in real life, if people were causing trouble and you ran a pub say, and you had troublemakers there:
Competent management will deal with the selected people in an appropriate way, either by a telling off a banning off course.
If had any Business skills 
you would ask the people (who you are concerned with to leave or change their manners). Carry on, and BAU for the rest who want to enjoy themselves.
However if PlusNet and the mods ran a pub then it'll just be closed. The easy approach - to punish everyone and not just the selected people causing the problem.
Root cause analysis.
@dvorak wrote:
it's just one person until the next one person. Then the next one person.
The number of 'just one person' that have asked for their accounts to be deleted because of chat is now beyond a joke.
I doubt if you've forgotten one particular 'just one person' who asked for their account to be closed just over a year ago, someone who chose a username obviously intended to have political overtones and be deliberately provocative. Before that account was actually closed I believe that user was given a warning about their avatar and told to change it, and we then saw that user defiantly change their avatar several times to yet more politically motivated, offensive to some of us, images.
If you need a reminder, that was rEUnite.
Prior to that, over the past few years, we've seen a series of similar politically-motivated agenda-orientated trolls, jumping on different bandwagons, and ISTR without fail they've all stated that they would prefer GC to be closed down.
Fast forward to the present and here we are with yet another so-called newcomer, again with a politically provocative username, of which I spotted the potential for trouble on the very first post when that 'new' user appeared, wondering how long it would be before the authorative, know-all, bossy persona appeared. Not long as it turned out.
For a 'newcomer' she certainly seemed to be au fait with the workings of the forum and its members, and quickly jumped in 'telling people they're wrong', here there and everywhere.
So now it seems, the latest re-incarnation has succeeded in achieving that goal of closing GC without even getting to the stage of mentioning it!
So how about this for an analysis (no I'm not mad!), and don't forget we're dealing with a wily, shape-shifter, blame-shifter character here (and I'm not claiming exclusivity as others may have made some similar observations);
The username 'MinnieWoke' has obviously been very cleverly thought out and deliberately designed to antagonise; IMO aimed in particular as a wind-up to Minivanman who has always attracted a lot of attention from the aforementioned series of trolls due to some perfectly legitimate topics he's brought up, in this case obviously that relatively new kid on the block, 'woke'..
MinnieWoke is obviously a play on Mini Moke, a clear link to Mini cars (e.g. a Mini van) in general, but maybe not so obvious, changing Mini to Minnie has connotations of Minnie the Minx, that other self-styled female trouble maker from the Beano, then obviously just add the 'Woke'. (ISTR rEUnite was also a female trouble maker as were several of her predecessors)
Next the avatar, clearly an image of a Mini Moke fits the bill, so that's what we get.
But as stated above, the previous trolls have all gone 'head to head' with Minivanman, so I wonder if the situation in the image below was also planned (I suspect very likely, although it will meet with denial)?
i.e. a Minivan and a Mini Moke facing each other off, as seen in the 'Who's online' section of the forum!
I did make a partial quote of one of @JonoH s posts earlier in one of the threads in the now locked GC forum regarding his comments about his/your abilities in the 'spotting of re-treads of previous banned persona non grata' and some of the reasons they might be re-admitted to the forum; however, it seems to be another failure, and IMO this particular case doesn't seem to be covered by those re-admittance criteria, other than the one he stated as "at the discretion of the moderators".
I mentioned in that post that your radar is inferior to that of some of us plebs users, which has been shown to be the case on numerous occasions.
Regarding your mention of the members of the PN Forum who post in GC and are not PN customers, I know at least some of them, if not most, have previously been customers, so therefore have some 'inherited' affiliation with PN.
The same cannot be said for the previous trolls, and I would put money on the fact that MinnieWoke is also not a customer and has no intention of becoming one, just like rEUnite before her.
