My programming background - started from machine codes. Did everything - business desktop, high performance game like apps, firmware for microcontrollers, web front ends, high performance enterprise grade backends, distributed etc. etc. Multiple languages. So lots of experience. Now I use AI quite extensively to generate snippets / classes of code with small and well defined functionality. Most of the time it works just fine and due to my extensive experience I could quickly spot wrong approach, inefficiency, potential issues etc. After telling AI to fix whatever if any problems I've found I usually satisfied with the solution. So overall AI has become a very valuable tool for me, saves gobbles of time. How much exactly - do not really know / care.