All of this should normally be the noise of politics, but at Barcelona you never know. It is irrelevant what past club legends think, especially people who hold grudges and can't be objective.
Xavi had his chance, and he himself threw the towel. Somebody else came on, and is looking at this situation with a a much better attitude and that's that.
Laporta didn't do anything wrong, and Xavi's reaction to this only strengthens the idea that the decision to sack him was indeed the best. We already are in a bad situation with transfers and such, we don't need moaners in charge to add to the issue.