I can easily believe it.
Back when I worked for a living as a test-designer and builder, I’d joke with the project code leads that their best hires would be the laziest coders they could find. The coders who automated/scripted/whatever any process they’d be required to do more than two or three times.
If I was still designing/coding I’d be using some form of AI to generate the ground code. That was always the best way to get a project started - steal some code either from my own vast snippet library or from some generous chap online. If you weren’t a good code thief, I didn’t want you on my project. Of course, all the code I’m talking about was ‘in-house’, and never marketed. Back then, there were dozens of websites where good-hearted blokes shared generous chunks of working code - copy/paste/modify and move to next leg.
Easily 60-80% of code is boilerplate.
Been writing code since the 80s. This has always been true.