[null_investor]

Your request is missing the product research and feasibility part, which is that there's likely 0.1% or less kids that navigate and select songs on Spotify.

This means this likely has no business case, and you can imagine how laborious tagging and labelling music is.

As somebody else pointed out, one could avoid explicit songs, but that might not work as expected, as that song you mentioned yourself could be labeled as explicit.

Whenever something doesn't work the way you expect, maybe it's worth applying common sense knowledge to figure out whether it doesn't work the way you expect because the money incentive isn't there or just because it would be tough to build it.