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.

Applying the (DRY) Do Repeat Yourself principle.

it's... interlocked safety, shut up.

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.