The pool is large, resumes don't differentiate => I have to talk to them to find the guy. I don't know how to do this efficiently. If you've got that skill, go right ahead. For my part, the rise in compensation has resulted in a lot of people who don't have any interest in the subject except as a tool to make dollars and they always run into dumb stuff like wrong documentation making them unable to act.
Yeah the kernel docs say one thing but the kernel behaves differently. Just look at the source. It's open source, man. Won't do it without being told.
If they don't care but will be persistent, fine. But if you can't work some basics, it's not worth it. And the correlation is near 1.0 because at least passion guy has something driving him to dig to next layer.
Inevitably some sucker will hire him, give him some on the job experience and then I can pay more.