Damien wasn't even the one who suggested it.
It seemed that August had glimpsed the benefits of power once he'd unlocked his dragon form, because the instant they got home that night, August practically begged for Damien to train him.
"Dad, you're strong, right?"
He didn't really understand before. He didn't know anyone other than his father, so he didn't have a way to compare the things he'd seen to the norm.
Damien wasn't shy about using his power around August. Whenever it was useful for their daily convenience, he'd do whatever he needed to do.
However, those conveniences were mundane impossibilities.
Normal people couldn't just create animals whenever they wanted to. They couldn't take people from one place to another in an instant like Damien could.
When August saw the ancestral dragons, he was awestruck, sure, but not nearly as much as he was when he witnessed Damien's dragon form.