(Some people are unable to afford it but that's an entirely separate social problem, and it would be unusual for somebody with the skills demonstrated in the article to be struggling to earn a living wage.)
What I would be interested in this protobuf inspection approach for would be implementing some decent parental controls. I would very much like to be able to enable/disable individual youtube channels. Currently all I can do is switch the whole site on and off. I have all the necessary infrastructure already, so I might give it a try.