No and no. 44% is not near average when half your shots are 3s and you hit them at a 43.4% clip, never mind the added 90% from the FT line. Cam had one of the best true shooting percentages in the B10. He was also third in the conference in defensive box +/- and defensive rating. The guy was a stud across the board.
He shot a higher % of 3s at UConn than at Rutgers and had a higher % made. His 2 point % at Rutgers was 45.3% and his 2 point % at UConn was an elite 53.9%. Rutgers 2 point % in 2022/2023 was 47.6%, so yes, his 2 point % was below the Rutgers average. That said, he was an elite 3 point shooter at Rutgers. Ken Pom rated him the #33 offensive player in the Big 10. EvanMiya rated him the #66 offensive player in the Big 10.
As for a 44.4% FG% that Cam had in 2022/2023, that would been what the #189 team in Division 1 averaged this past season. So, yes, his shooting was about average.
Defensively, Spencer was rated by Evan Miya as one of the worst defensive players (who played regularly) in the Big 10 at #102.
Bottom line, he made huge leaps in performance both offensively and defensively at UConn.