personally I think anti-capitalist acting in a stupid ridiculous commercial for something that doesn't need a commercial because people will buy it anyhow is a great act of subversion.
John spent the 80's making catchy pop music with a very anti pop message with PiL. People either get subversive humor or they don't. This is like Tim Heidecker being in Bridesmaids. He has no lines, and there is literally no reason why he should be there, but that just adds to the surreal aspect of it.