That article makes it sound line exum still sucks for the most part. It did say he hit 20-24 threes but also missed 8 mid range shots in a row and is struggling with ball handling. Plus usually I think we hear more about the positives stuff than the negative.
For Exum ,making open 3pt shots has been his biggest need.I see talk of Mitchell's athleticism but for Exum his speed is his signature.If Exum is knocking down 3's their won't be sagging off him making him very dangerous (at least this is the hope),Mitchell will find this out too.