Earlier today I asked this question and received an answer in comments. I suggested the commenter post the comment as an answer, and another commenter said not to do that because my question was a duplicate of this not at all obviously related question. And apparently several other questions that commenter admitted had “misleading titles”.
I might be new to Emacs.SE, but I’m not at all new to SE in general, and I did spent considerable time trying to find an existing answer to what seemed like an obvious question before posting my version of it. If there’s a question here that poses the problem in the same form I did, I’ll happily call it a duplicate. Or if the purpose of this SE is to help primarily the kind of serious elisp hacker to whom it’s intuitively obvious that binding a keystroke to a lambda is the same operation as making a function into a command.
Otherwise, I think providing more paths to an answer and more meaningfully different search keywords for a given piece of information—meaningfully different to the searcher, at least—is adding information, not noise.
It seems to me that on other SE sites a closely related answer doesn’t necessarily imply the questions are referentially transparent. But perhaps those other SEs aren’t purely functional enough?