In the related meta discussion Is it okay to request canon-only answers?, several users have expressed the sentiment that adding "only canon answers, please" is a band-aid "fix" or even "cheating", because it should be automatically assumed that any answerable question should be answered from canon only.
To me, answers should always be rooted in canon. The only differences I find acceptable, are answers from canon, and answers based on canon - reasonable speculation backed by canon sources.
...and, in response to that comment:
"To me, answers should always be rooted in canon." - Huge agreement there. Otherwise we're inviting pet theories and fandom wishes - and as long as you have good grammar and punctuation, these don't often get downvoted like they should be. Even worse if they include a barely-related image... (cue "ooh shiny, they must be right!" upvotes)
I'm confused about why you think adding "canon only" suddenly makes a question answerable. Adding those two magic words doesn't conjure up an answer that didn't previously exist... The objection is about whether the question is good, not about whether there's an answer to it. I don't think that adding "canon only" improves a question at all, personally, because everything those two words communicate should already be implied by virtue of posting the question.
This belief, that the only answers acceptable are those that are directly based in canon (and, by extension, that the only acceptable questions are those that clearly only seek canon answers implicitly), is new to me.
So, in a related question to Where do we draw the line on opinion-based questions?, I'm asking:
Is our community expectation that 100% of our content be directly related to canon (both questions and answers)?