Of course not. Causality is more complicated than you present it, though you don't turn the ball over more than you assist others just because the shooters around you are bad.
Why not? Rather than pass the ball, maybe he tries to do too much with the dribble and turns the ball over.
Besides that, Tatum's TO% is at 9.9%. His career rate is 10.2%. He's not really turning the ball over more and despite what we game thread, TOs aren't a huge issue for Tatum. As a team, the C's are about mid pack and could afford to improve. That will be mostly up to DS and MS though.
The C's are 19th in APG, so slightly below average. That's a very crude way of measuring playmaking, but I think most people would agree the C's are a slightly below (or worse) average playmaking team. Couple that with average ball protection and inconsistency from game to game, and it seems worse than it is. Or accurate, if you have a lower opinion of me on the C's playmaking.
They have above average playmaking at the big spot and Tatum isn't "dreadful." Sometimes it does appear that way, but that's a function of Brown (who is a black hole) and Smart/DS arguably being below average for the PG position. Smart could also be above average if he's not playing PG. Tatum, himself, is probably average or maybe even slightly above average. I also think TL and AL are above average playmakers at their position but playing both together has diminishing returns.
The team could probably use a better playmaker than Smart, but they need a shooter/scorer more. Ideally, they'd find a player who could do all those things and play D. Good luck with that. More realistically, they might be able to acquire an Evan Fournier type/Ricky Rubio type player later in the season. With as bad as the O has been this year, any type of shooting and/or shot creation would help.
The C's can afford to sacrifice some D for O. The easiest way to do that is getting rid of the 2 big lineup. The drop in D may even be made up for it by being able to have one of TL or AL on the court at all times. I could get behind Grant Williams starting and playing 25 minutes a game. I'm not sure he's a shooter/scorer, but he's been an accurate shooter for awhile now and has been doing so with volume this year. If he's hitting his open 3s, he's going to be scoring by default. When he doesn't, it becomes problematic but they also have JRich who is more the shooter/scorer type. I'd be playing him closer to 30 too.
If Ime wants to go with a tight rotation, just play 8 guys close to 30 minutes a game. Maybe have Al, TL and Grant closer to 26 and Tatum, Brown Smart closer to 34. Have DS and JRich around 30. Could also go a little lighter on minutes played for a few of those players to make room for regular season Freedom. This is also the C's, so one of those 8 players is almost always going to miss the game. That's 30 minutes to spread out to whoever, probably Kanter, RL and the occasional PP/AN sighting. Play 6-8 more, not 1-5.
Grant's last 9 games: 10.1 points, 5.0 rebounds, 1.2 assists, 0.6 TO, 0.9 blocks on .552/.500/1.000 shooting in 27.3 mpg. He has 8 blocks in his last 5. Probably just noise, but he's at 1.0 block/36 for his career (2.6% Blk%). Not great, not bad. He actually has more blocks this year than TO, 12 vs 11. If he does fill the C's Burke/Luke/3PPAG role, this team would actually be pretty good when healthy. It would extend the team a lot and makes scoring a non factor. Even if he starts, having Al, DS and JRich off your bench still provides plenty of scoring, though the shooting leaves some to be desired.
Of course the team is never healthy for any stretch of time, but having 8 players instead of 7 will help there too. Think how bad the C's would be with last years version of Grant Williams.
edit: Also, if Grant Williams ends up our Luke, we could still add our Rubio.