AI is great at design but terrible at algorithms

Claude and Gemini crush system design and high-level modelling, but the moment you drop into actual function logic, they fall apart. It’s like pairing with someone who writes clean diagrams but chaotic code.
And if you ask them to improve it, they vanish into SOLID-theory rabbit holes and over-engineered OOP madness.

These days, since I vibecode more, I have found myself refactoring what the robots are writing ever so often that it has got to a point where I straight up delete function logic and write it myself.

Curious if others are seeing the same?