The article is fairly detailed. The author states that they tried to get "pseudoscience" as a descriptor removed, got abused by the skeptics on Wikipedia and got banned. Several quotes are given from the talkpage.
The relevant section on the talkpage seems to be this. The banned user seems to be Ellaqmentry (T-C-L). After this ANI report, they were blocked by JzG, then unblocked because JzG was involved, then re-blocked by Bishonen.
I am not knowledgeable about the subject, but some Googling on the Cochrane Review website suggests that most studies of acupuncture are of low quality and/or show no effect, but there are certain kinds of maladies (typically some kind of pain) where it is found to be mildly effective. On the other hand, there are two sources cited in the article which directly call it "pseudoscience". The article says about these sources:
As far as I can see the article is right on this point.the first is an introductory undergraduate textbook for non-science majors. The second is a primer on science in education. Neither of these sources is peer-reviewed, referenced or bills itself as a representation of scientific or medical consensus.
Whatever the merits of acupuncture (I think it's bogus, and the few positive results are likely to be noise, but as I said, I'm not knowledgeable about the topic), the ganging up at ANI and the talkpage, accusations of socking without evidence, the gang-bullying so on, is typically horrible. Acupuncture is big business, so I would not be surprised if it was indeed some kind of sock. Isn't there a better way to handle these kinds of things?