Borrowing another reference from a tv show I liked much less than Cosby's Huckstable family show} I'd ask Bill Cosby
"What you talkin about, Willis?"

But since I get his drift, I'd say to Bill Cosby:

"To each his [or her]own,

different strokes for different folks

and

remember your roots and culture".

{I would also add that "It takes a village to raise a child", but that supposedly African saying has gotten so overworked that it has gotten tired...

though in many ways it's still true...

And if I had a singing voice, I'd sing to Bill Cosby,
he's not heavy, he's my brother.

and reach out and touch somebody's hand
make this a better world if you can"

Then I'd bring it down home and sing this spiritual:
"You gotta mind [You gotta mind]
You gotta mind [You gotta mind]
You gotta give an account at the judgement
You gotta mind
[repeat chorus 1x]

You gotta mind how you talk
You gotta mind what you talkin about
You gotta give an account at the judgement
You gotta mind.

chorus


****

And if after all that, if Bill Cosby didn't get what I was sayin to
him, and if he continued to let his mouth run faster than his mind, I'd leave his sorry ass alone to reap from "these people" what he had sowed.

That's my answer to your question, bobad.