>> Of course it writes a lot of code. It gets paid per token.

I don't buy it. I think a much more likely reason it leans towards adding code is because deleting code carries inherent risk: it can break things in major ways or minor ways or very visibly or invisibly. Adding new code, on the other hand, is a lot safer: the only parts that can break are those the AI touched inside its own working context. So it doesn't have to go down rabbit holes and potentially create bigger and bigger messes.