Only previous reference is in an answer to What kind of questions can I ask here?, which is 5 years old. We've seen much water pass under the bridge since then.
Question inspired by: Choose Your Own Adventure Books/Games: Are there any Two-Player variants?
Let us take a hypothetical:
Someone asks about character optimisation for a Lone Wolf game they're playing (perhaps with friends kibitzing). On/off topic. Why, why not?
What other edge cases can we use to define the scope here?