I did my OW a little over 2 months ago and never was a SMB, sausage, DSMB, or anything similar even mentioned in the class (except maybe briefly in the classroom materials).
About a month ago I went I my first ocean trip to the Keys, I got my AOW on the trip and again, never was a SMB mentioned nor did the instructor or boat crew even ask / check if anyone had one. I actually did have one (and a line cutter, another item which was never mentioned in classes) because I'd done research on my own and determined that I wasn't getting in the ocean without one.
The first time an instructor mentioned to me that I need an SMB was when I signed up and did the classroom for the drift specialty, at this point it was said I'd need an SMB as they are required on drift dives.
In short, I'm not sure anyone should be surprised that new divers don't have SMBs as (from my experience with one of the certifying agencies) new divers aren't told about them and how important they can be. Of all the things I've done in my life that have required me to get licensed or certified my diving certifications have quite honestly been the most lacking.