Comment by uludag

I feel this is on point. So not only is there the time lost correcting and testing AI generated code, but there's also the mental model you build of the code when you write it yourself.

Assuming you want a strong mental model of what the code does and how it works (which you'd use in conversations with stakeholders and architecture discussions for example), writing the code manually, with perhaps minor completion-like AI assistance, may be the optimal approach.