Sure, we can work on improving the tag wiki. It's expressed less clearly than it could be, and doesn't fully describe what we expect inside [rules-as-written] questions.
I'll point out the meta answer you're referring to is presented as a summary of how we tend to handle things inside the RAW tag, and was vetted by a number of people in the community as fairly accurate. (Apparently without objection! That's a nice surprise.)
I would not say the tag wiki conflicts with how we behave on the site: RAW answers do want to stick to game material, and providing stuff outside that is more or less a frame challenge, but a perfectly OK one in the right circumstances (summarised in that meta answer), so that's not discouraged by any means. The wiki just doesn't make this stuff as clear as it could, so we should definitely revisit it.