Back in the day, T Series and Pewdiepie were competing at reaching 100 Million subscribers first, and Pewdiepie won. However, after some time T Series managed to surpass Pewdiepie and became the most subscribed channel on YouTube, essentially beating Pewdiepie. Now, Mrbeast was one of Pewdiepie’s biggest fan and once his channel started blowing up, he realized he could avenge his hero and beat out T Series. In the end, he did accomplish that and couldn’t be more proud.