But now I can watch a correctly titled "John Carmack tech talk", send the link to a friend, and they'll wonder why I'm trying to recruit them to Amway.
Both are minor things, but I am in favor of creators being in control over their videos. Especially since it would get used to correct accidental misinformation and things like that.
I just don't see much harm in the ability even if the video creator could completely switch content.