Question about DJ's dunks

[Akklaim1]

Despite being a lefty, how he never dunks with his left hand? It's just weird. I want him to know how to dunk with either hand to avoid getting blocked. Look at Blake.

[Forte IV]

Going on the fact he mostly uses his right hand, this offseason I want him and the shooting coaches to at least try having him shoot free throws right hand. If he can finish and throw outlet passes exceptionally well with his right he can at least try out right handed freethrows to see if that helps him out.