It seems you want to have debates in the back-end before publishing anything. What have you learned from Nupedia, and how do you expect your system to work differently? https://en.wikipedia.org/wiki/Nupedia
It seems you want to use a scoring/voting system. These have some known issues when you're trying to find facts. Have you considered how to prevent gaming? One famous (albeit fortunately failed) example of such an attempt: https://en.wikipedia.org/wiki/Indiana_Pi_Bill
If you are posting ad for your product - why you expect people to go through an extensive explanation in a video form?
A paragraph (or page) of someone being self promoting is something i might read if its on topic and sounds like they have something insightful to add. A video has almost zero chance.
This has come up a bit recently. However, I think you're underestimating the effect of "Sea Lioning" and alike. Experts are often busy, doing important things in their respective fields. They don't have time to duke it out.
I give an extensive explanation on the economics of free speech here: https://www.youtube.com/watch?v=M8HbvC6vqIY
I interviewed Noam Chomsky on it last week here: https://www.youtube.com/watch?v=wUPZ8rSESZo
And we are building it here (sorry for the bad design so far): https://rational.app/