g2 crowd buff

In the g2 vs lev match when g2 pushed mid on attack icebox the players heard the crowd make noise, which made them think that lev was also pushing mid so they just held and waited. I thought players had some noise canceling headphones so this doesn't happen. Also wondering how much this does happen/how much teams even care when they do hear a crowd roar.

clip: https://www.youtube.com/watch?v=cen9mLjdoKM timestamp: 5:04

In CS pros literally stare at walls to see if the crowd reacts, I think this is a nothing burger