While all that was said about Netanyahu here is certainly true, there's an additional factor that has yet to be mentioned, despite (or because) its great significance. That is the accusation leveled at Netanyahu by the more moderate supporters of Israel that he's responsible for the brutality with which this war was has been led. Nothing could be further from the truth - Netanyahu's views of the conflict are fully shared by the overwhelming majority of Israel's population, with many (perhaps most) believing that he's not going far enough. Any conceivable Israeli government would prosecute the war in essentially the same fashion. The same is true regarding the overall solution of the Israeli-Palestinian conflict. Netanyahu has certainly done his best to sabotage such a solution, but any government likely to be elected in Israel wouldn't budge an iota from the status quo he has imposed.
But admitting these facts would present a significant conundrum for the above mentioned moderate supporters - they'd have to recognize that changing the government of Israel wouldn't help at all and that the country as a whole would have to be penalized to forced them to change their way. And since this is inconceivable for these people, they have to pretend the problem is Netanyahu, hence much of the rhetoric against him.
Honesty I think this conflict would be quite different if the Israeli army was more competent, for one thing it would be already over, and I think Bibi is very much at fault for the rot in IDF. Whether you’re pro-Israeli or not, whether you support 1967 borders or a Israel from the river to the sea, the fact is that IDF have mainly become a occupation force under Bibi, and it have suffered under it. It would almost certainly still be able to beat any Arab army, but the trouble IDF had with Hezbollah in 2006 should have served as a warning to the Israeli government and they have mostly ignored it.
