Ok why is everyone freaking out about their helmets? Who the fuck cares if it was them or not them underneath it ? The whole point of the helmets was because they want their music to be more important than themselves. So what if it isn't them ? What difference does it make?! Also their helmets are cool shut up seriously ! Ugh just mad seeing all these comments like "how do we know it isn't them?" "What if they're paying others to do their work or accept rewards?" So what. They weren't the ones winning the award it was their music.
Get over it.
That is their gimmick
If you don't like it well then gtfo
There are tons of musicians who do the same from violinist to DJs. Because they don't want to be famous they just want their music to speak for them. That's the point. You're suppose to lose yourself in the music instead of wondering who's behind it all.

So please just stop asking questions and enjoy the show .