He was likely never going to be NBA good, but he's college good. SEC preseason 1st team. 1,000pts and over 500 rebounds. His field goal percentages his junior and senior years were great (4th all time for UT in a single season his Jr. year, has the 5th highest career fg % going into this season). Has appeared on Wooden and Lute Olson Award watch lists.
He has single-handedly won us big games in his career - like when he dropped 27 with 6rb @ #6 Kentucky in the comeback win (National Player of the Week). The only UT player to score more in Rupp is Chris Lofton (31). Players that "were never that good," don't do things like that.
Just this season he was on a tear, having big games against UNC, Colorado, Texas Tech, and finally #6 AZ when he dropped 24pt 10rb (SEC player of the week).
Then he got Covid, and it was almost a month before he scored 10pts again. Something he did in 6/10 games pre-Covid and 1/11 games post-Covid. He started 10/10 games pre-Covid; 4/11 post-Covid. Averaged 25.7 min pre-Covid; 19.36 min post-Covid.
No, Fulky isn't NBA good. But he's a damn good college basketball player with a damn good career - don't let changing baselines/selective memory/revisionism make you think otherwise. Covid has 100% affected his production.