I'm glad to see that you found J.M.'s explanation to be reasonable.
Concerning your last paragraph and, in particular:
I've lost respect for this site, and will likely never refer an MSE
user here. Why: Based on the number of upvotes given to this user on
As an experienced user on math.se, I'm sure you're aware that the correlation between vote totals and quality is quite loose. That's especially true of very highly voted questions as extreme cases are largely driven by links from social media. In that context, broadly accessible topics with catchy pictures tend to get loads of votes. The Batman question over on math.se received 400 some votes for similar reasons, as did many other questions on the highest voted questions page. Your own answer here surely benefited from this very phenomenon.
You can refrain from referring users here if you like, but it seems a little silly to do so based on the vagaries of the voting system. Mathematica.SE remains by far the best forum to discuss the use Mathematica in a context that's independent of Wolfram Research. Your good friend amzoti certainly consulted it a number of times when she had questions.
For the record, I can see how one might find the "buttocks question" to be interesting and I don't think that it is necessarilly "juvenile". Indeed, modeling of real world objects is generally challenging, interesting, applied, and fun. Many of my own answers on this site fall into that category, as do several of my answers over on math.se.
The human form is uniquely important and offers specific challenges, which is exactly why art students have painted and sculpted nudes for centuries. I don't know the intentions of the original asker of that question but, while it might have been juvenile, I don't think one should assume so.