And that's exactly what this users/members did/are doing,and I do not see anything wrong in it, probably making more than one thread or persistently commenting on the thread made,then it's definitely against the rules
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I've never said it's against the rules, I wrote that it stays in compliance with rule 25, but considering the large amount of these threads moving them into one Child Board would clean a bit Meta. It's only a little organizational change. I think I would be also more comfortable for for them because getting into Meta they would immediately know where they should put their thread and what also important - having all similar threads in one place some of them maybe first read some other threads before writing their own.
But if you think about it, It's like you are not banning them anymore, you just quarantine them in a subforum topic that they can keep spamming.
According rule 25 "The only exception is creating a thread in Meta about your ban." so they can't post in others threads...
Why not ;-)
Thats the reason why i am created this thread https://bitcointalksearch.org/topic/your-account-got-banned-look-first-here-5043370 !
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Great we already have a first pinned message for this Child Board...