He never really covered Nintendo. He went in KNOWING this would happen as he has commented on it in the past. He begged for donations to get his Wii U also.
This was nothing more than a publicity stunt to get attention so he can monetise the rant video.
Do Nintendo need to sort their policy? Sure, but let's not pretend this guy is innocent in this. He knew it would happen and making a rant like that acting as if he's shocked and it's something new, no. He did it to get attention.
I am still stunned by the audacity of youtubers who think they can use other people's intellectual property to earn money and that the developers don't deserve a cut. I think Nintendo's doing the right thing, they're just asking for too much of a cut. 20% would be fair. They need to strike a better balance.
Imagine you wrote a book. Someone then put a video on Youtube where they read the whole book, but with their own twist. That's what this scenario is. You'd be pissed. In movies, if they use a piece of music, they have to pay for rights to use that bit of music, even though it's not why people see the movie.
Some youtubers are acting like entitled children. Why do they think they can earn money off of other people work just with the guise of it being "free advertising"?