Sorry to hear your Beef Ribs experience was non-spectacular, sounds like a good deal for your dogs though.
Can you tell us a little more about the cook?
Dry brine and/or rub, cooking temp, times, smoke, braise time, braise liquid, finishing IT?
Sounds like maybe that Select quality rating was Select - or maybe should've been Standard -.
Rib bones look to be pretty flat/wide, muscle fibers look pretty coarse and lots of large deposits of yellow fat.
All indicative of lower quality meat, probably some old beef critter that made it past 2.5-3.5yrs of age.
Try a better quality and a different cut of ribs next time, apparently these were some pretty poor Beef Back Ribs.
Find either IMPS/NAMP 123 Beef Plate Short Ribs or 130 Beef Chuck Ribs.
ETA: That is a weird greenish tinge in the last pic of it sliced.