I'm not sure why you're on such a crusade about this. There's nothing particularly wrong with sharing a creator's official link if the alternative is to share nothing. Yes, they might remove it, but they'll have to change the link to something otherwise their subscribers will not have access to it, so it won't be gone forever. So the actual subscribers aren't really affected either. If anything, the creator actually benefited from people using their link before mega discontinued the affiliate program.
There are plenty of people here with shit internet, so they can't create a mirror.
If you're so worried about it, mirror it yourself instead of complaining about people sharing content which is the entire purpose of this thread. Although it looks like there is already a mirror up anyways so there really was never an issue in the first place.