I disagree with the ruling because the bone in question was described as "long, thin". If it was just bone chips, then it wouldn't have caused the complainant issues. Because of that description I think the liability should (ultimately) be on the party the was responsible for deboning the chicken.
I could be wrong about how liability cases work, but I think the Ohio case should have held the restaurant liable for the complainant's injury/distress but allow their findings to be carried into a suit from the restaurant against the supplier of the bag of boneless wings.
No deboning process is going to be perfect, but that's what liability insurance is for. I do think no "long, thin" bones should make it through a reliable deboning process, tho.