That was pretty fucking awesome "I should mail you my shorts because you are stuck in 1993".
Cena is right, he is who he is. Part of the audience boos (but wants him to turn heel, they also love heels, hmmm) and part of the audience cheers. He's not a tweener, tweeners are every smarks favorite character because they say ******** things and then win cleanly. Cena is who he is and gets cheers or boos.
You guys might say "he's clearly doing good guy things and still getting boos". Well, doesn't that say more about the audience? Bret Hart HATED how they booed babyfaces. It's because it's the "anti-hero" generation. On USA, a dude without a law degree, not doing things by the book, is a "babyface". The Joker was adored by audiences, he was an anti-hero. Some people boo him, some cheer. The audience isn't uniform. Instead of trying to get 100% of the audience to cheer, he is who he is and maybe 75% cheers, 25% boos, either way, 100% is making noise and is emotionally connected.
Cena knows more about wrestling and the psychology of wrestling than anyone on here. If you are arguing otherwise, get off your high horse and realize just how smart he is.
For people saying "he's right and wrong, there are babyfaces and heels, people just chose who they like" well that's kinda wrong too. Hogan could do back rakes and choke Iron Shiek and get babyface cheers. No doubt he was the babyface, but he was doing heelish things. A heel to one person is a face to another. Everything has changed. In ROH, Cena would be even more of a heel the more babyface things he did. The fans don't "chose who they like more" because that's no different than when I was 7 and I "chose" that I liked Sting more than Hollywood Hogan.
Heels have been cheered for years. Don't believe me, take a look at the original Four Horsemen. Flair, Anderson, Blanchard and Anderson (even when they had Barry) were being cheered about as loud as Dusty, The Road Warriors and Sting. The thing was, they made sure to stay in their character, ie. heel. The formula was still the same then. John Cena, as I previously said, is making these statements due, in my opinion, to the fact that he knows most people just generally don't like him. But heels have been cheered for years yet you never saw Flair come out and say "there's no heels or faces, just a bunch of guys being who they are." I know he's entitled to his opinion, which is fine, but hey, I think he's wrong on this one.
If people actually didn't like him, they wouldn't watch his segments and they wouldn't make noise. You are wrong, he is just "a heel" to those people.
Here's the deal.
Either people who boo him love to boo him because of his loud reactions, ability to draw, and lots of people watch his segments.
OR
The people who boo actually hate him, but because Cena's segments are highly rated and he's such a draw, they aren't a large enough group to even care about.
Looks to me like people love to boo him. Especially considering how many people have smiles on their faces when doing it. It's fun to duel as fans and to have fun.