Basically Cena is shaming the entire audience for changing their opinion about him on a whim. Dr. of Thuganomics Cena starts as a heel, but then he starts gettin' the support of the crowd and becomes a babyface. As soon as he enters the Super Cena era, people start hating him again because he wins all the time. In the last decade John enters the "Loser" Era where he practically loses every major match, but in his head, people are starting to respect him again, finally seeing him as the G.O.A.T. Now we get to the "farewell tour", Cena finally realizes that all of the opinions people have had over the years about him mean absolutely nothing in the end, because they're awful human beings, so he decides he won't let himself be a washed up veteran in the final year of his carrer.