I've watched quite a few and got many good ideas, but it's taking a lot of time that's sometimes better spent with "deliberate practice". I learned more and faster by attending courses by people I already follow and love taking advice from. Earning money with it gives them the time needed to structure and prepare the material.

For example, I'm currently taking the "Elite AI Assisted Coding" (https://maven.com/kentro/context-engineering-for-coding) course by Eleanor Berger and Isaac Flath and learned a lot from their concise presentations and demos and challenging homework assignments which certainly took a long time to prepare.