He's done it on those too this season.
Honestly, I'm not rejecting the idea that defenses will adjust more in playoff settings, and that will make it more difficult for Zion then, but anyone who just waves their hand at it and says ''Oh well, teams will just start building a wall!'' is admitting they flat out haven't watched the games. Teams have been building walls against Zion twice a week since he entered the NBA and it hasn't worked yet. It's just not as simple as that.