Granted I've never been injured, but I've gotten small pieces of bone shards several times throughout my life from shredded chicken type stuff.
I dunno if they refused to pay medical bills because that'd be fucked.
But if you kill a creature, cook and debone it, yeah, occasionally a bit of bone will make it through.
You can still call it boneless, because you knew you were buying meat from a creature that normally has bones and an effort has been made to remove said bones.
I hate to say I side with the Ohio Supreme Court but I think I do.
The difference is that this was a significant piece of bone, over an inch long. Bone chips are one thing, whole pieces of bone is another thing entirely.