Yea cite the study funded by a company that invested billions into AI instead, that will surely be non biased and accurate.

It didn't "survey" devs. It paid them to complete real tasks while they were randomly assigned to use AI or not, and measured the actual time taken to complete the tasks vs. just the perception. It is much higher quality evidence than a convenience sample of developers who just report their perceptions.

> I'm not saying the DORA study is more accurate, but at least it surveyed 5000 developers, globally and more recently

It's asking a completely different question; it is a survey of peoples' _perceptions of their own productivity_. That's basically useless; people are notoriously bad at self-evaluating things like that.