TL;DR: This was not a stance; merely a misremembering of what I assumed to be network-wide consensus. There was also some confusion as to where the comment originated from.
Can I get a better understanding of why the mods don't think this is acceptable use of the Community Wiki?
s/the mods/wizzwizz4/g.
Just like real humans, I can't hold every piece of legislation community consensus in my head at once; this is why I posted two separate comments. One of them was an ordinary comment, and the other was explaining my mod action.
The comment about Community Wiki not being appropriate in this case was... dubious, to say the least. The strong insistence came from the mSE question Stop using community wiki as a reputation denial mechanism:
There is nothing "wiki" or "community" about those posts, and that is because in most cases CW is misused as a reputation denial mechanism. And while part of this misuse is by the communities, a very large part is actually by SE itself.
(emphasis mine)
After some web searching, I found the Meta MSE answer that I was thinking of when I wrote that comment:
On the other hand, if one wants to add further information and not merely duplicate the content of someone else's comment, there is nothing wrong with posting that as one's own (i.e. not CW) answer.
(emphasis mine)
I'll re-emphasise that with what I should have been focussing on:
On the other hand, if one wants to add further information and not merely duplicate the content of someone else's comment, there is nothing wrong with posting that as one's own (i.e. not CW) answer.
(emphasis mine)
You were completely right to call this out. :-)
Edit: Coming back to the question, I noticed that the comment in question was not, as I had decided after noticing that Chenmunka had posted an answer, posted on that answer; rather it was posted on the question shortly before Chenmunka answered. I should've checked this first; given this information I am not sure what I should have done. I doubt I would have taken action in this case.
