This wasn't my experience at all.

I tried Codex for a short while but quickly went back to Claude. Found myself having to revert Codex changes all the time. Maybe I had subconsciously altered my workflow/prompting to work well with Claude, but somehow wasn't providing Codex with the correct context, not sure.

My purposeful caveat was 'software professionals', i.e. user in the loop engineering. Codex is much better at slinging slop that you later need to spend some time reviewing if you actually want to understand it.

Sounds like an antipattern being rebranded as a solution. I shouldn't have to precisely instruct AI on how to solve every problem. I should be able to give it requirements and with its vast knowledge it should be able to understand various design elements within a system like design patterns and make the appropriate change without me needing to tell it to look for those things.