Here's 13 mins of analysis on Gradey Dicks defense for those interested.
TLDR: Gradey sometimes gets mislabeled as a "bad" defender. He's not great at some things, he's very jumpy when guarding on ball, he has some awareness issues off ball (getting back cut etc) and he needs to add strength. But he's got really great anticipation for steals, fast hands, great recovery instincts to rotate and use his length to challenge shots and he's shown flashes of really good individual defense also.