You know, I don't have any special insight into how Steve Bannon thinks except that in my work as an antifascist, I've read some of the authors that PoS admires (and I most certainly, do not.)
But I know he thinks you're chumps. And I know he thinks he can use your performative commitment to democracy and the marketplace of ideas to fuck you up. And I know he's honestly not that clever, he just relies on the fact that he's playing a different game than you are.
That's what's happening here. You want to get Biden elected, and defeat the Republican. The RFK Jr campaign isn't about winning, it's about throwing a fucking bomb into your dinner party and seeing if the resulting damage makes you weak enough to lose the ballgame to the fascist in 2024.