That’s just plain goofy. Shut up and sing.
How is that goofy? He’s explaining an exercise technique he likes. Don’t do it if you don’t want to.
But you are extremely rude to tell someone like Paul McCartney to ‘shut up and sing’ for that.
He did not talk politics, he did not try to tell you what YOU should think.
You millennials and newbies are creating a toxic environment here.
Elon? Is that you?