His best self is a pitcher, who rarely walks batters, and who pitches best against left-handed batters. The reason he can avoid walking batters is that he has an intuitive feeling for where his throws will go, and he is very good at making adjustments to his throws.
Twice in his career, 2016-2018 and 2022-2023, he was off the path towards his best self. Getting closer to his best self is what got him to the Majors, and getting closer to his best self will make him shine with the Diamondbacks.