I'm not fan of pop music, but I should admit, that both clips in the main post have something nice in them, like, fun small animations, cool dance and movements, highly synchronized with animations and music.
The second one made me smile: it was cute to see, that these kids were seemingly sincerely happy, making this performance.
I've checked the text of the song from the first clip, and it turned out to be the song about spending huge amount of money on girlfriend and having fun with her. The version from the second clip is more vague (we are not sure anymore, that it is about love interest), and a bit mitigated, it don't mention sex and alcohol anymore. I suppose that these edits were made, just because such a themes are considered as a taboo for kids in society? ¯_(ツ)_/¯
So, what is wrong with kids clip? Why shouldn't it be? Maybe, I don't understand something?