He wore a hoodie when he was in the Straight-Edge Society, so it is not something he has just started doing. I'm not sure what his mindset is in relation to wearing a hoodie and whether he thinks it adds to his heel persona in someway or another, but I think it looks pretty badass regardless.
I think it is due to the heel turn. The t shirt reminds of his face time I guess
I don't love John Cena, in fact I don't even like him. But I hate the idea that he is the worst! Cena doesn't bury talents. Talents go down the card after Cena because feuding with Cena... is the highlight of their career. Deal with it.
Everything I say is my opinion, not a fact.
English is not my native language.