Not to be a meanie, but, instead of ending the friendship, you could for starters treat them the same way. Not to mention you could tell them their videos suck.
Which, I mean, I know I should say "try talking to them" but I'm feeling extra passive aggressive lately.

But more importantly, you shouldn't let your friends keep you hostage with implied threats of shitstorms. Life's a bitch, they better get used to it.