sure, it is easy to detect and they will. however, at the moment they don't seem to be doing it. The author said this after deploying a POC:
Aaron B told 404 Media “If that’s, true, I’ve several million lines of access log that says even Google Almighty didn’t graduate” to avoiding the trap.
So no, it is not a silver bullet. but it is a defense strategy, which seems to work at the moment.