Fuzzy space (not that one), a lot of places it might get squished into the enabling/promoting deliqancy type rules. If you give beer/smokes to an underage kid you can be tagged for it.
On a practical level proving any of the above is near impossible, but it might get you on the local’s radar if it keeps being accused.
I do think we have it backwards in America where prime time crime drama is no problem but everyone freaks out over a butt cheek, but at the same time it’s not healthy to let little kids dig into some things unguided and before they’re ready.