All jokes aside, James Gunn explained that not only has casting for Guardians of the Galaxy Vol. 3 not begun (remember, he’s currently working on HBO Max’s Peacemaker series), but there’d be no reason to look at solely white actors if they’re just going to be painted gold anyway.
Plus, if Gunn wanted a Zac Efron-type to play Adam Warlock, then he’d simply try and get Efron for the role.
Note to self: don’t undergo surgery to look like another actor until the physical characteristics for a character are 100% confirmed.