You need to go back to Iverson in 2002-03 to find a guy chucking it up there at a rate of 26.8+ attempts.
Before that, you need to go back to Jordan 1992-93 (the only guy on the list who won a title in the Year of Chucking).
Before that - you are pre-merger!!!
You will note that if you sort by field goal percentage that only Joe Fulks in 1947-48 has a worse percentage than Carmelo on this number of shots.