He's enjoying the spotlight but only by tearing others down instead of lifting his own team accomplishments up.
He's expressed his annoyance with Ronaldo:
https://www.besoccer.com/new/ronald...ndash-rossi-hits-out-at-portugal-star-1010538
and then dissing on other teams/players in his group where they came in last.
Which isn't to say they don't deserve it. But for his role to do that is petty.
Hungary has a lot to be proud of in their performance.
But Rossi is butthurt because he's playing a zero-sum game by dissing on his more-successful competition as an attempt to make himself look better. It's sour grapes.
Someone who was confident in themselves and their team would be more likely to congratulate the competition in their group and encourage them on to win to represent how tough the Group of Death was. Instead he's mocked the entire group, which only frames him as a loser among losers.