Yes, absolutely, that is what is necessary for black forums to excel. But as Troy mentioned, it's not happening. That was the point of my response. TODAY most black people who excel in their careers get a boost on white-run social networks. They're publicly owned. So I need to correct myself. White-owned media isn't accurate.
Both Davey D and Black Planet today still exist. Some sites report Black Planet, owned by Radio One, has 20-25 million registered users. Even Solange, with her popularity - and her older sister, Beyonce', did their best to drive traffic to Black Planet. Solange set up an account to launch one of her studio albums. Do you know how the majority of followers found out? She posted on Twitter that she was on Black Planet. https://solange.blackplanet.com/ So, I'm not saying what you've written is in dispute. It's just not happening on the level as it has in the past.
Case-in-point, Issa Rae is one of the most successful people I know who launched her entertainment career through a white-run social network. Issa Rae created Misadventures of an Awkward Black Girl series on YouTube - and that led to her HBO series "Insecure," Pulitzer awards, and Emmy Nominations. Now she heads up an entire corporation, Hoorae productions https://variety.com/2021/tv/news/issa-rae-insecure-hbo-hoorae-1234936020/ that helps other black people launch their entertainment projects. She also uses Patreon, a community of patrons (benefactors), to help her support new talent. Here's the article I wrote for EBONY magazine about her.
So yes, marketing is the key to popularity but just not in the traditional sense. Now we're promoting our personal brands on social networks with the largest audiences.