Apples-&-Oranges. "Volume"s meaningless intra-day order processing volume. Just MMs doing their job processing orders during the day.
Short INTEREST are open short positions needing to be bought back at some point in the future.
"...daily short volume which never seems to show up on the actual short interest report..."
"It is easier to fool someone, than to convince them they have been fooled."
For those that don't get it, it means that people need to be more careful, and do good due diligence...