I can't agree with you or disagree. If you can provide any reliable sources that explain Kanter's injury-riddled past, then I can form an opinion.
Ultimately it would be on the physical examination.
All I can say is that it is well documented that Kanter had a back injury during the Hoop Summit.
I'm not a doctor, and so this would ultimately be down to the doctors examining him AND the Jazz's assessment of risk.