Yes, that's accurate. Ultimately it would function as a type of patreon.com, but where artists don't have to sign up beforehand.

Just as posts/content can be split into shares and traded, users can be. Specifically, "angel investors" in this service are trying to find good tweets, videos, posts, because they themselves can be traded, and their share-price will increase if they're good at finding good content.

That's the incentive for "angel investors": Sure, you can just copy someones tweet and take credit. You can forge a Picasso and sell it; people might buy it, might start providing you patronage. But what happens when someone finds the real Picasso?

What makes someone want to "zap" you on stacker.news? They're providing patronage. Would you zap a known reposter? A forger? Maybe.

Thanks for helping me spell out these ideas, it helps a lot.