[TkTech]

Reading "refined" source code for projects will likely teach you significantly more about programming if that's what you wanted to learn. These videos are mostly to see someone else's process rather than the code itself.

For example, I watched the linked video. Using it as an example for Python programming would be terrible - it does not follow PEP8 (extremely long lines, no spaces around operators, excessive descriptive names ("Java style")), has many unnecessary assignments and copies, very few comments, no sphinx docstrings, etc...