They count inasmuch that Angry Joe has the right to prevent distribution of works that derive substantially from his content. That's the whole paradigm of copyright, the most badly named legal concept I know. No-one gets specific rights to copy or publish, instead these laws outline a set of exclusionary rights that interdict the publishing and copying activities of other parties.
I'm not saying that this is right or good, but something you need to know if you're unhappy with the way things work. You need to know whether you want tweaks to the current system or more radical change, but you have to understand what the system is before you can do that.
Thanks for the response.
I was just trying to say that the posts that more or less go along the lines of "Oh no, he gets paid to play video games. What will he do now?" aren't exactly seeing the whole picture, because producing, filming, and editing the videos does take a lot of hard work. Perhaps I didn't convey my message all that well then.