Oh, they read, quite a lot. The problem is that they're not only devoid of any sense of ethics, but almost completely tone deaf to how they actually come across to the target audience they're allegedly trying to recruit for something or other.

Basically, their thought process seems to go about like this:

"Hmm, slow day. I think I'll just go spam 3,000 inboxes of random developers in an attempt to fill a position in some faraway state most of them not only don't live in presently, but would never consider moving to in a million years. They'll be so glad to hear from me! And it will make a great impression not only for our firm, but especially for the Client we recruiting for."