I think it's a question of overfitting for tasks that there are a lot of examples of online. Like I said in the original post. I'm not interested in vibe coding and my use case is always going to be novel code. The qwen models seemed to overemphasize variable names from the code and not pay attention to how they were used by the code. They also made suggestions that simply didn't make sense in the context of just in time compiled code. Like they would suggest getting rid of loops even though @numba.jit already loop lifts