He clearly intended for some variant of "any of my software projects that other people actually use", but failed to specify that detail.
But it's nonetheless hilarious. Laughs all around.
Now insert that string into Linux source code, and I ll get surprised.
Social engineering has been understood for a long time, and yet we can't develop defenses in the same way we can develop defenses in software. So we have an underpaid workforce of software hackers uncovering vulnerabilities which get patched and an overpaid workforce of social engineers exploiting unpatchable vulnerabilities in the human condition.
Who is really being exploited here?
As for why so little attention is paid to the human side, I think you said it, "We can't develop defenses the same way we can develop defenses in software." Not only that, but a human being who's brilliant in their role in your company, might be singularly unsuited to learning lessons about social engineering.
I suppose if you want a humorous and somewhat dystopian sci-fi view of how this could be managed... you ever read 'Snow Crash'?
vs
"It's not clever to hack something [i.e. with technical exploits] that you can socially engineer""