After another view, I feel compelled to offer an additinal critique.
In one sense, the song is commendable.
To be honest, I was expecting an unrealistic presentation which would portray the shark as some sort of friendly creature with which a cartoon child might play. However, the missive portrayed the Baby Shark and his family as predators which hunt and from whom it is best to hide. While being presented in a typical family is, perhaps, an expected and cliche bit of anthropomorphism, the depiction as predator is an unexpected - and refreshing - touch of realism.
One might contrast this with Barney, the Dinosaur. Whereas it goes without saying that encouraging an attitude of love among children is admirable, using a caricatured Tyrannosaurus Rex to express the idea is disappointingly unrealistic. While there were certainly some species of land-dwelling, predatory dinosaurs which were larger, the Tyrannosaurus Rex was still quite fearsome. No amount of singing and sense of good will would have changed that.
So, points to “Baby Shark”!