I suppose the common thread is that they are all outspoken Black people, from different walks of life, who have all recognized that corrosive influences are coming from certain capitalist entertainment industries and contributing to cultural/moral degradation as a negative externality made in the name of profit.
Cosby spent YEARS playing "America's dad" for the Black family, as did James Avery, Reginald VelJohnson and others. They provided a wholesome role model to look up to, of a married family man, who provides for his kids and teaches them manners and morals, as opposed to "role models" poppin bottles and bangin models that the rap industry provides. Misogynistic lyrics, racial slurs, materialistic lifestyles, sometimes even glorifying violence. What good does it do? If outsiders can't criticize it because it is "authentic Black expression", then it falls to Black voices to do so. And they do, increasingly.
To try to combat moral / cultural degradation and restore family values takes both economic and cultural reform.
This used to be the subject of Black sit coms: https://www.youtube.com/watch?v=Q5D2RvIQwQE
And even CNN anchor Don Lemon used to OPENLY say stuff like this: https://www.cnn.com/videos/bestoftv/2013/07/27/nr-lemon-no-t...
So Steven A Smith said the same: https://www.youtube.com/watch?v=pb4pEN3s7B8
Deloris Tucker: https://www.youtube.com/watch?v=Pr6gb1w72xA
I mean, I think you're tilting at windmills here when you're going after everyone's moral character who has said similar things. I could give you a lot more examples, but they haven't and don't make a dent in the capitalist machine. It has adapted.
The reason it's on topic is because it's just a special case of what that machine sells to everyone regardless of consequences. Instagram and TikTok "influencers" have contributed massively to anxiety and depression of teenage girls, but also promote dressing and acting in ways their parents and grandparents never could.
Miley Cyrus was the "voice of a generation", a "good girl" promoted by "wholesome" Disney, then she had a coming-out with the record industry, where her biggest new talent was sticking her tongue out while naked and gripping a chain: https://www.youtube.com/watch?v=My2FRPA3Gf8
Sex sells and nudity grabs headlines on billboards: https://www.dailymail.co.uk/tvshowbiz/article-2157969/Rihann...
It tells women to "lean in" and work 10 hours a day instead of telling both men and women to "lean out" and spend time with their family.
Sometimes it even becomes a parody of itself: https://www.youtube.com/watch?v=xNzXze5Yza8
Again, there doesn't need to be a conspiracy behind it (as Kanye believes) it's just what the market (and "the algorithm") selects for.
Look at your news, it's all become click-bait that makes ADULTS (whose brains are fully developed) into frothing-at-the-mouth rabid haters of the left, or the right, or whoever. It also radicalizes citizens into supporting destructive wars.
Look at your social media. It has made you distracted at dinner, addicted like a pavlov's dog to notifications, using your phone 10 hours a day of screen time. If it can do that to adults, imagine what it can do to kids.
This society overall tries to medicate people and put bandaids on real problems, like when both parents work 10 hour days, stick their kids in public schools and their parents into nursing homes, and everyone is medicated because everyone is depressed or not served well by the system.