USB-C is decent for data transfer. It's pretty poor for power delivery: the pins are too close, so it's not rated for use in bathrooms or kitchens, and there are many more of them than needed for power delivery, making it relatively expensive to use in things like children's toys.

It was a mistake to conflate flexible power delivery and data transfer, you rarely need both at the same time. It's possible to design a better and cheaper 3 or 4 pin power delivery standard that can use higher power. But the law now says USB-C and good luck ever changing that.