If you have James Harden, I suppose, you literally have to give him the ball on every play.
With Bob Cousy, in that era the "point" carried the offense, with this case being, Cousy was a brilliant passer and top shooter. Red wasn't stupid, Cousy had the ball.
As 5m pointed out, Walker steps aside allowing his team mates to succeed and it leads us to something I still try to communicate with words.
There are 5 guys on the court. They are committed to play their best at both ends. Our discussion here, is "offensive centric", but, an NBA game is not.
This year's Celtics keep posting three guys with 20 points each (simplified to make the point). I suggest a team, to be effective at both ends night in and night out, is best with maximum "involvement" on the part of all players.
People aren't that complicated, they want to "be a part" of what is going on and if they are? They will play better.