Is it DP's fault that every coach we've had after calciopoli has started him every game possible? Obviously he will retire one day & but some folks go too far in saying that he's single handedly controlling transfer & team matters.
No if you are a player and a coach says play you play, you can't blame the player. What I blame is the management, which isn't decisive enough, which doesn't buy players to replace or at least buy a young sub(or even use our own Gio) and use it as Del Pieros sub, if they still think he is capable of leading the team whole season(which i think he is not anymore). And I blame the management for lack of vision because in my eyes they haven't thought through what to do without Del Piero, but that time is comming very fast when he will not be able to even play a good 45 mins.
And for the influence of firing coaches and players, I think he desn't have a word in this, but his presence and influence may have had some influence in their departure. And his status as a club icon, legend may have some influence to the board why they are keeping him and not looking to future. At least that is what I think.