Interesting. I once filed a dispute. It took them about four weeks to decide. I was given right, but the copyright owner blocked my video again after a few days. It's fighting against windmills.
Many of my videos have been blocked for a few years already. I can play them, provided I'm logged in. When not logged in, I can't play them. Ramones covers are blocked for almost 100%, just like AC/DC and The Sweet.