Kuzma grades okay (averageish) on a variety on advanced metrics, but is already 23. He seems very much so like a floor-raising player, who helps a mediocre team get to 42 wins or something. However, largely for the reasons DannyDarwinism articulates, it's sort of hard to see him even in the rotation for a good team with aspirations at contending. He's a poor defender who provides value for offensively challenged teams by soaking up some possessions, but actually good teams have a bunch of actually good offensively players already doing that, so that skillset would mostly go unused. He can sort of shoot, but he's not a good shooter. He can sort of pass, but he's not a good passer. He's not the worst defender in the league, but better energy bigs are almost freely available.
He doesn't have any truly plus skills, and his best attribute is redundant on a good roster. I can see a team talking themselves into him if they just want to be respectable however.