Rik, it's a bad video.

Most tutorials covering any complexity without a voiceover are not so good. The resolution wasn't perfect (not full HD) but I was able to make everything out. I don't think you can judge a community on the basis of this.

I've seen some pretty bad Xara video tutorials too.

The good thing is that there are some excellent commercial affinity tutorials available and two books, so I'd say affinity is in the ascendancy for sure.