I think the intent is you watch the 20 minute conference talk at the top, not read the paywalled post.

> The main part of the talk is available for anyone to watch, and the Q&A section is for paid supporter.

So I listen to part of a talk and don't get the actual feedback on the talk unless I pay them? It's like the opposite of the Socratic method.

Right. You can watch the video, which is better than most YouTube videos, for free.