I don't believe that "coding" is a single axis of quality, either. I'm now better at some types, and worse at others.

When I was young, I was much better at reading or writing complex functions that worked correctly. As I get older, I'm much less able to, but I also wouldn't want to even if I could.

I don't think that's just sour grapes. I don't want to inflict complex code on my coworkers, either. And there's many times (when I'm tired, when I'm fixing an emergency bug, etc) that I'm not at 100% mental capacity and I value not having to work right at my brain's complexity limit.

16 year old me would probably not have believed that.