I think I got confused badly writing and expressed in the wrong way.
I wanted to say they chosed Pellegrini in 2016, despite the fact she refused in 2012 because she had no intrest, when Lo Bianco was at her best and had the media by her side (also because of Pellegrini's fresh gossip about her cheating on Marin with Magnini, that became her official boyfriend 7/8 months before the games). And when Pellegrini gave up, they went for Vezzali and Lo Bianco wasn't even took in consideration.
I mean both Pellegrini and Vezzali were coming strong for 2012 Olympics and had golds already in 2008, while yes Lo Bianco was at her best, but italian volleyball has never even came close to get a medal so there wasn't a point in having Lo Bianco as flagbearer (and same goes for Egonu this year). I think Paltrinieri makes more sense.