Should we remove this tag to avoid misleading users? Is there some legitimate purpose to having it? If so I think the description would need changing to explain what an acceptable usage would be.
As this resource page does exist, personally as a user I don't find much practicality for the tag itself on the types of questions I'm envisioning would be on-topic, per the Stack's on-topic page. Most of what I can think of would fall under primarily opinion-based.
At the very least, I'd suggest adding that resource page, or some semblance of it, to the Help Center itself to inform users about its existence. Especially for new users that cannot participate in Meta because of reputation and are more inclined to make questions that may be out of the scope of the site. Perhaps even clarify it under the site Tour's question recommendation guidelines.
If the tag will still be preserved in case of any question that does merit it (I'm having a hard time thinking of one personally, to be honest), I do agree that the description should be updated to reflect good use-cases.