At age 23, Pirlo's career was going nowhere (until Ancelotti decided to move him in CM and alongside Gattuso), Zidane was still in France and Paul Scholes was still flirting between the reserves and the first team. However that's not the point. All of them had one thing in common ie an absolute beast in DM whose workrate and presence were to a ridiculously high level. Scholes had Keane, Zidane had Deschamps, Pirlo had Gattuso. These sort of players were there throughout their stellar career. Carrick, Davids, Vidal etc.
Pogba needs that sort of player more then any of these gentlemen. He's still 23 but unlike young Scholes/Pirlo/Zidane the spotlights are all over him. He also moved from one league to a totally different league were the tempo is much higher and its far more physical then the EPL. Even JSV struggled at that and he was older, wiser and he had a certain Roy Keane at his back. As a Juventus fan back home told me, if we keep playing Pogba alongside makeshift defensive midfielders (Herrera, Beanpole) or ancient players then we're really risking of ruining the boy.