The striker comes into the World Cup with plenty of fans concerned he will not recapture the form he showed in the Euro 2012 semi-final win over Germany despite scoring 14 in 30 Serie A games for AC Milan last season.
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"I think we talk too much [about him], about anything and everything," the 35-year-old told a press conference.
"He is a young player, he is good, but you have to give him some air. When he goes to the toilet, there is no need to fill pages about Balotelli going to the toilet. Everything he does ends up in the newspapers and I think that is unfair.
"He must be judged solely on what he does on the field. The press spoke and now there are huge expectations around him. Sometimes it's good, sometimes not. He still has to mature and grow, but he will get there probably much quicker if left in a little peace. "
Pirlo remains a vital part of the Azzurri set-up and was a World Cup winner in 2006 when they overcame France in the final, but he stressed he is not an essential player for Cesare Prandelli's side.
"When I'm on the field, actions pass by me," he continued. I help the team play differently. But the team is also able to play very good matches without me."