I pretty much agree with this. I will first lay out JT's deficiencies than give him his credit that is due. JT's speed when running the point is a detriment to him. It's great he has speed but he is too fast for his vision which completely throws the timing off in the half court. He's like herding a cat. He's kind of all over the place which is unpredictable and hard to measure for teammates. It's the proverbial trying to shove a square thru a round hole at times. At times, he plays too fast. In addition, he doesn't have that consistent outside shot. Fran's offense is keyed on having an outside threat to pull the D out and open the middle.
Now where JT excels and is valuable is his speed and quickness, in particular on D. He is a pesky defender, a physical specimen who just has a toughness to him and he doesn't back down. He's always tippin balls away or right in a players mug which is uncomfortable to players.
JT also does a good job of pushing the pace and running in the open court. But, unfortunately for JT, 85% of the game offenses are in the half court setting.
JT has a role. Right now until his shot gets more consistent, it's stout and pesky D and taking care of the ball.