I agree the ball sopping is worrisome, but I think the team needs to live with it this year so as to develop the Jays properly.
Let's face it, neither Tatum nor Brown are especially gifted with excellent floor vision or outstanding passing ability. Therefore, it must be taught them and the team is going to need to live with the ups and downs that occur with both of them as those portions of their games mature.
Kawhi is similar to Brown and Tatum in that regard. He really wasn't passing the ball all that much until he got to LA. He was over 30% in his usage while being under 19% assist ratio for 4 years. It took until Kawhi's 9th year to hit the 30% usage, 20% assist% plateau. Kobe took 5 seasons to reach it. It took Bradley Beal 8 seasons to do it. And our very own Paul Pierce took 5 years to accomplish it.
Brown looks to be hitting it that 30/20 level in his 5th year and Tatum in his 4th year. So there is hope. To be a great all around on ball offensive engine, you need time to develop the experience to know when to create for yourself and create for others. We just need some patience to get through the growing pains.
I also think this wouldn't be nearly the issue it is if more veterans were on the team, confident in their own game and won't differ to the Jays every trip down the floor. Or look exclusively for their own offense. I am actually kinda shocked Kemba wasn't mentioned. Or Smart. They both get ball hoggy/ball stopish. Compare that to Horford and Hayward, who were excellent, unselfish playmakers from the wing and frontcourt positions who made the offense run better. So in a way, this is Ainge's responsibility as well for constructing the team this way.
It's also Stevens responsibility for not instituting more plays that force more off ball movement, more cuts, more passes and less isolation and hand off passes from their bigs. Stevens has a tough job though. He needs to encourage the duo to be the team's scoring leaders, while also teaching them to do it within the function of the offensive system and trust their team mates. They, of course, might respect their team mates more if most of their team mates weren't mediocre to poor players still on their rookie contracts.
So maybe, for development's sake, this is a bit of a bridge year, while the Jays learn. But let's hope Ainge and Stevens learn too. With this lack of ball movement, there is tons of blame to go around.