Post funny things about programming here! (Or just rant about your favourite programming language.)
That's intentional. So if one part of the code suffers a random mutation and spontaneously develops a bug, the redundant code can still ensure the proper functioning of the program while the bug gets fixed.
Just take care if you merge two branches that contain the same bug; you might end up with a program without functional redundant code. That's why you should never merge closely related branches.
It's how ~~isoforms~~ functions with different signatures evolve. As long as it isn't harmful it tends to stick around. Then the different code may develop adaptations which fit it into a niche if it is a selective advantage for the ~~organism~~ code base.
Applying the (DRY) Do Repeat Yourself principle.
Depends on what you are developing & the language used but a simpler codebase is the definition of security/privacy by design that's how you get more power.
As an AI herself, she's right.