Honestly, Cosby’s fall was larger than Kanye’s.
Unless you were alive in the 1980’s it’s hard to understand how beloved Bill Cosby was.
It was probably on-par to how Mister Rogers is remembered today.
He went from that to being completely persona non grata.
I think Kanye’s fall is nothing in comparison to that; especially considering that he still has a career even though it’s not as successful as it used to be.
Get one of your professional contacts to honestly evaluate him.
You can’t objectively evaluate him since he’s your kid, and any advice he hears from you will be subject to scrutiny since you’re his parent.
If you’re right then your message will be more believable from a third party, and if you’re wrong then they will hopefully catch that.
Either way, you are right to try to set him up for success; that’s your job as his parent.