Hahaha!
They are talented musicians, even though I'm not particularly fond of their over-the-top style.
They can often be seen at concerts & in videos (here as well) with half bow hair torn off... it's painful to watch!
I think this whole contamination thing started way back in the '90s with Apocalyptica, then the Bond quartet made it glamorous.
Then came the YouTube stars, like ThePianoGuys and 2Cellos.
Most are top-notch classical musicians as well... I mean, you can take away all the special effects, the costumes, the distortion and they can still play better than many classical players, it's not all smokescreen