Did y'all even listen to the clip posted in the OP? When referencing "nerds" he was talking about how the Twitter voices are a thing now when dictating the culture in comparison to when the performance of the artist in the streets determined who had real merit. He's refereing to the DJ Akademiks types.
But Bennys argument has holes. Dave Mays (The Source) wasn't street and neither was Elliot Wilson (XXL) and they were the nerds dictating the culture back in the day. Plus Benny has overlooked the fact that drill rap has been a thing since 2012 and gang affiliated music has been prevalent since. There has been a voice in support of drill rap for a while now because it had a long life and trap music had a life before that and still does. Plus the biggest consumers of Hip Hop music has always been white people who mostly aren't from the streets like that.