The bag is not a key piece of evidence. LHO was seen carrying a long sack to the TSBD on 11/22. If Oswald had destroyed the bag it would not have changed the fact his rifle was matched to the shells and bullet and fragments and that LHO's rifle was found between the boxes on the 6th floor of the TSBD.
Of course it’s a key piece Jack. Oswald was accused of carrying a bag that morning. The FBI claimed his prints were on it. The FBI claimed it was produced from material available in the TSBD, likely the day before. It ties him to the schooling scene.
Anything else I wrote in the post you responded to that you disagree with?