Others with far more articulation will hopefully chime in.
As controversial as some may find it…That chromatic exercise is a colossal waste of time. Don’t try to get good at it. For all intents and purposes…its pointless. And I did that exercise a LOT.
@Tom_Gilroy as done a massive amount of research and work on this. Before I’d even taken my first lesson with him, he saw a video of me playing that exercise and others like it. His comment was “At best they’re a waste of your time, most often they’ll reinforce fretting hand postures which are suboptimal for actual playing”
This post is full of great insight and worth the time: