This discussion is about a young man that could bring much needed scoring to the this team if he didn't have to worry about being jerked out of the game after every single mistake.
When Cal jerked Willis out of the game it was after three straight possessions. First possession he gave up a three pointer after being instructed for three days on how to guard that particular player and to absolutely not give him a three pointer, the next possession he had a nice put back dunk, and then the very next possession he committed a stupid foul on a 15 foot jump shot that resulted in two free throws.
Do the math. His two points didn't mean anything if he's directly responsible for giving up five points in a span of two trips on the defensive end That's a negative contribution. You can't do one good thing, but then immediately do 2-3 bad things. That's why he doesn't get a ton of minutes because +1 but -3 adds up to be very significant over 20 - 30 minutes of playing time.
That's what people like you fail to realize. His positives do not outweigh his negatives. This team does not
need Willis to score. This team needs Willis to play tough defense and rebound the basketball. Who cares if he can make a few three pointers if he's giving up 10 points on silly defensive lapses, not rebounding and giving up 5 offensive boards. After it's all said and done, his "much needed" scoring results in a negative contribution to the team.