Agreed. And sometimes X is not permitted or unlikely to be permitted. In my day job, I work at BigCorp and I get questions like "how do I Y without Z?" Often,

Agreed. And sometimes X is not permitted or unlikely to be permitted. In my day job, I work at BigCorp and I get questions like "how do I Y without Z?" Often, the answer is "you shouldn't Y without Z. In order to have a consistent UX, all BigCorp applications have a policy that Y is done by Z... What is your X?" And then we can talk about if X really is exceptional. There is a world of difference between a forum like stack overflow where individuals have diverse needs and a forum inside a perscriptive company where uniformity is an engineering or usability booster.