In other words, in Python you have to rely on your colleagues manually writing documentation, and if they don't you're out of luck and they're 'bad developers' and potentially the whole product is affected.

In static languages this simply isn't a problem. Types are checked for consistency at compile time and you don't have to rely on people toiling on this busy work.

Not to say documentation isn't necessary, or good, but isn't something you need to create working programs because otherwise no one knows wtf any variable is without running the program.