I agree with you, although I would put it differently.

Learning requires feedback, not necessarily failure. The issue with watching a video is not that you can’t fail, you can certainly fail to get the point made in a video, but as you can’t get any feedback it would be hard to figure out that you didn’t get it.

In my view the difference between watching a video, vs trying to implement an idea as code is the direct feedback you get. If you’re wrong or made a mistake, you’ll know and can adjust your mental model accordingly.

It’s also what I like about writing code, if a colleague and I disagree we can just design a test together and find out and learn together.