I want to again recall the advice I’ve given to the community repeatedly in the past:
Now you know that this is not drama, but an important thing to do, a necessity.
In the not-distant future if the ecosystem continues to go downhill, we must even prepare that Parity/W3F themselves will go rogue (there’s already nerving signs of this in the recent censorship, and Parity leadership openly calling others “jerks”). For example, this forum may become permanently unavailable with years of discussions lost. It’s always important to save anything you think is important. Today it’s just Kurs videos, tomorrow it could be the Polkadot infrastructure itself. Hopefully Parity/W3F does not control more than 1/3 of any of the on-chain stuff (validators, collators, etc). Otherwise, even the network itself can be halted.
Still, I do want to note that @ChrawnnaCorp does not actually have a legal duty to make the videos available. Creative Commons (and any open source licenses) only grant rights when you already have the copy of the software binary. If you already have the Kurs videos, yes you are free to redistribute them and do all the things. But the original author is in no way obligated to continue hosting the videos. If no one saved the videos and the original author refuses to make them public again, then it’ll be lost forever.