His past few performances have definitely been encouraging, but let's not get ahead of ourselves, anoint him a future starter - star and proclaim victory over non homers who you conflate as "haters".
The lateral quickness/switchability doesn't surprise me, but the fact that he mostly held his ground, with minimal help, against Randle, did. If he could become a suitable option on the Antetokounmpo's/Williamson's of the world, that'd be huge.
Even if he is ready to become a rotation player and presuming they're whole post All-Star break, 1) That won't last through 40 games in 68 days and 2) It's not a big deal if he has to wait another half season while a credible rotation player, on a possible playoff team, plays ahead of him.