Definitely forking it, I need this to continue my research.
We can hope this inspires a) greater suspicion toward proprietary players that are sitting atop open-source work like GitHub (they're not the only one by any stretch); and b) greater adoption of systems that distribute the software's entire history together, including documentation and bug reports, e.g. Fossil.
If you can prove me wrong with some link to where are we covered legally to download CC content from YouTube, it would make me very happy.
Maybe you are right. If that is the case it is questionable whether contents produced with tax payers' money should exclusively hosted on Youtube to increase Google's income and restrict tax payers' rights.