Yeah. It goes both ways. Interview processes may often be terrible. But it's also the case that, in a world where you don't even need to put a stamp on an envelope, a lot of people looking for a job/any job (or hoping to get a story written about their client, etc.) will just blast out email/applications to any valid or even invalid endpoint.

ADDED: And, to be fair, if you don't have connections or past history that really jumps off the page, it is a numbers game to a large degree.