I skimmed this article and I’m confused and must not be understanding it.

It talks about bare metal vanilla components without any frameworks and such. This has my attention. But it ends with “here’s a library on top of web components called Lit!”

Are web components not good enough yet? Why do I need anything?

It's not a library. No components ship with Lit. It's just syntactic sugar for stuff that's built into browsers now. That's the "bare metal" parts. You need to write your own components and make your own library for your company or project, although some big firms like IBM, Alaska Airlines, and MS have released the libraries they made with it.

This fact, that it's the "anti-framework" (ie: not a framework) is both its greatest advantage and its biggest source of confusion for new folks.

Interesting! Thanks for the clarification.