Jaylen and Rozier took about the average number of shots they have all series and playoffs. It wasn't even that their shots, especially the threes, were bad. They just missed. There was a stat that the Celtics were 0-11 on uncontested threes. Not open, but UNCONTESTED.
So what do you do in that situation. Give it to Tatum 30 times? He's not ready. First of all even if you tried he'd just give the ball up, he doesn't have the alpha mentality yet. But not only that he's not good enough yet. Loses the ball on drives, misses layups, commits turnovers on kick outs. he's good and he will be a lead dog eventually, maybe soon, but he scored 24. Lets not exaggerate what he is right now.
And you can blame Brad all you wnat but at some point if all three of your guards suck theres nothing you can do. We have a seven man rotation. Baynes isn't a scorer, and the three guards were bad. That doesn't leave enough left to win.