The problem isn't asking for money, but delivering the emotional hook that anchors the call to action. It's become the norm for people trying to make a name for themselves, but it subverts the logical argument that is supposed to be the point of the video.

When trying to make this argument myself, I'm not going to link to a video that ends with dramatic conjectures and asking for money. People watching it will enter logical and exit emotional. It's his prerogative, but it makes them lower quality to me.