I don’t care how much you think your code is readable, plain text comments are readable by everyone no matter the proficiency in the programming language used. That alone can make a huge difference when you’re just trying to understand how someone handled a situation.
Comments explain why, not what. Any comments that explain what a section of code is doing would probably be better off as separated methods.
Apart from basic documentation comments, like JavaDoc or C#'s XML documentation comments.
There’s nothing limiting what a comment should be as far as I know.
As an example of what I mean, I’ve seen in a 10k+ lines python code a few lines of bit manipulation. There was a comment explaining what those lines did and why. They didn’t expect everyone to be proficient in bit manipulation but it made it so that anyone could understand anyway.
Then someone needs to change something about the code and doesn’t bother updating the comment. Now you still have uncommented code but with a comment that confuses instead of helping.
