So much salt haha.
I would definitely like Nintendo to spread the wealth and let people make money doing these videos. But it's their IPs and as of right now they can enforce whatever policies on anyone using their content for monetizing purposes. And it's totally fine for Angry Joe to refuse to make Nintendo related videos because he doesn't like their policies. Maybe Nintendo will budge one day but I don't know their reasoning.
This is all really dramatic though. It seems like an issue being blown way out of proportion because it affects someone popular, but at the same time at least it means his voice might get heard.
But they are letting people make money by doing the videos. They just want a small cut of the ad revenue and want to make sure you're not being a total shithead with their IP on the internet.