The article mentions that coding is only a fraction of dev time and thus accelerating that part of the job can only create incremental gains, and oh PS, lines of code and similar metrics are a bad way if measuring dev productivity, anyway, and we've known that for decades.

The OP claims AI accelerates non-coding parts of the job, too, and so the article is misguided.

I ask for evidence.

In response you give me... code output metrics?