just for context, this is the current guideline under metadata guidelines:
“Song genre and language should be added to the tags of a beatmap. This is to enable users to search using these terms in-game like they do on the website. For instrumental tracks, "instrumental" is considered the language tag. Exceptions would be when language and/or genre are not clear, or multiple apply. In case of the latter, one fitting tag for each may be applied.”
there’s no real reason this would ever be broken as a guideline since it objectively improves searchability. it’s also universally treated as a rule with maps being popped/dq’d for it frequently despite not being one, so I don’t see any reason on not moving it from a guideline to a rule
“Song genre and language should be added to the tags of a beatmap. This is to enable users to search using these terms in-game like they do on the website. For instrumental tracks, "instrumental" is considered the language tag. Exceptions would be when language and/or genre are not clear, or multiple apply. In case of the latter, one fitting tag for each may be applied.”
there’s no real reason this would ever be broken as a guideline since it objectively improves searchability. it’s also universally treated as a rule with maps being popped/dq’d for it frequently despite not being one, so I don’t see any reason on not moving it from a guideline to a rule