Certainly an interesting result, but remember that a single paper doesn’t prove anything. This will no doubt be something studied very extensively and change over time as tools develop.
Personally, I find the current tools don’t work great for large existing codebases and complex tasks. But I’ve found they can help me quickly make small scripts to save me time.
I know, it’s not the most glamorous application, but it’s what I find useful today. And I have confidence the tools will continue to improve. They hardly even existed a few years ago.