Well said. It plays a significant part in the story how him choosing a child will also show how the villagers will treat him. And its the best representation of how helpless and weak he is despite him being a dragon.
And knowing that he's a dragon that could shapeshift himself into a crocodile or bird if he desires so, them meeting with the dragon as a child does not look so weird to me especially since he is treated as a child by our MC. Its the past too. Like.
While like, I get it??? He's not a real child. But like. It just feels to me as a reader who spent 20 chapters or whatever seeing these two rawdogging and then suddenly one of them is a Kid-But-Not-A-Kid. Like, couldn't the author just had him take on an adult form the author wasnt aren't forced to have them meet like this