The way I interpreted is that it's probably negative if your experience is XY years in the same $foobar industry. In other words, the kind of developers who haven't learned new anything since 2000.

I've met people with over a decade of experience in programming and had to convince them that hey, maybe we should write unit tests because customers keep complaining about bugs? Had hard time in doing it because hey you just refresh a browser and see.

Well, you get the idea. :)