#1. He puts talents over
A huge criticism faced by Cena in his career was that he buries a lot of talents and hogs the spotlight. This was partially true a few years ago. But from 2015, we started seeing a new Cena who started putting over those who needed the win.
Kevin Owens beating Cena in his first main roster match clean as a whistle was a huge surprise for most of the fans. Seth Rollins, Dean Ambrose, Braun Strowman, Shinsuke Nakamura, AJ Styles, and Roman Reigns have pinned Cena clean in the last 2 years.
At Wrestlemania 34, the 16-time world champion was squashed by a returning Undertaker. Cena could have said NO to the squash match, but he didn't.
He has become the perfect company man who uses his status to push the talents onto the main event scene.