The problem isn’t the Jays, at least for the most part. It’s the supporting cast, particularly our guards.
I don’t understand why the team neglected shooting so much, but this is the natural consequence of that.
I don't think they're the problem per se, but they also aren't the kind of players who naturally create openings for teammates / make the game easier for those around them etc. It doesn't help that there is no bread and butter "Tatum and Brown play." It's not like there's a two man game there that the team can go back to in tough times.
All of that means that there's more onus on the supporting cast to be talented and skilled enough to provide that structure.
They are not the type of players you build a team around.
That is not to say they are not the type of players you can build a top team with them in major roles. Just that the team should not be scuplted around them.
Why?
Because they are not the types of players that can shoulder that load. They are not types of players who can organize and direct and offense. Or organize and direct a defense.
They are the types of players where you build a top team and they can fit into it because they are talented two-way guys. You build a team closer to the 2014 Spurs (4 stars, lots of depth) or the 2004 Pistons (4 stars, lots of depth) or 1979 Sonics (3 stars, lots of depth).
Another way of saying this is that Tatum & Brown are luxury pieces. They should operate in your offense similar to how average starting caliber two way wings would operate, but they have a greater than average capacity for taking and making a high volume of shots.
Both Tatum and Brown have the ability to go off for 20 points in a quarter, or 40-50 in a game. But they don't really change the way your offense operates and they don't put a ton of pressure on the opposing defense. Even when they're hitting a lot of shots, they're hitting the kinds of shots that opponents want them to take.
In short, Tatum & Brown raise the ceiling of your team, but they don't set the floor. They don't provide a structure that makes it easier for the guys around them.
So if your team without those guys is not particularly good, it's going to be not particularly good a lot of the time even when those guys are playing, unless one of them is going off for 40-50 every single night.