On the season, Kuzma ranks 28th in USG%. He posts a terrible TS% of .542. Only 2 players have a higher usage and lower TS%, Jalen Green, a 20-year-old on the bottom-feeder Houston Rockets, and Westbrook, who was cut from his team.
Of the top 50 guys in USG%, only 7 of them rank lower than Kuzma in TS%:
USG% rank - player - TS%
23 - Jalen Green .530
26 - Westbrook .502
28 - Kuzma .542
29 - Banchero .528
37 - McCollum .539
38 - Rozier .517
42 - Barrett .530
45 - Oubre .532
And Kuzma has a worse TOV% than all of them.
Take a good look at that list. First of all, all of those teams are terrible except NY with Barrett. Secondly, most of the guys are rookie-contract guys on terrible teams who are learning on the job (Green, Banchero), or they are mediocre vets on terrible teams with no efficient first option scorers so someone has to take the shots (McCollum, Rozier, Oubre). Plus there's Westbrook, of course.
The player that resembles Kuzma the most is Oubre. Like Kuzma, Oubre is a 27-year old making roughly $13M on an expiring contract who is absorbing way more usage than he should be for a bad team. The difference is that nobody is talking about Oubre making $25M. He'll probably sign another deal in the $12-16M range.
The other guy that arguably resembles Kuzma a bit is Barrett. Like Kuzma, Barrett plays alongside two much better scorers (Randle and Brunson) but still shoots too much. One big difference is Barrett defends and his team wins. The other big difference is that Barrett is 22 and there is a presumption that he will improve going forward so he has been indulged to shoot more to work on his game. Barrett signed an extension off of his rookie deal last summer that pays him 4 years $107M.
Why in the world would anyone consider paying Kuzma the same contract Barrett got when Kuzma is 5 years older and has no real likelihood of improving? And even if they are reckless and stupid enough to consider paying Kuzma that much, they damn well better not consider paying him even more!