I think the discussions are also missing another key element. The time in takes to read someone else code is way more mentally tiring.

When I am writing the code, my mind tracks what I have done and the new pieces flow. When I am reading code written by someone else, there is no flow.. I have to track individual pieces and go back and forth on what was done before.

I can see myself using LLMs for short snippets rather than start something top down.