It's definitely the reason the GOI doesn't wish to bring up the Muhammad al-Dura hoax, as much as it exonerates the IDF. It just opens up a can of worms, bad press, and more ill will towards the Jewish state. Even WRT to OCL, when Israel discloses information favorable to the IDF it's not reported. It's ignored.
http://www.justjournalism.com/media-analysis/view/israeli-report-contradicting-goldstone-ignoredIt doesn't even matter if B'tselem and Breaking-the-Silence explain Gazan deaths due to the complexity of fighting assymetrically against an enemy embedded deliberately within a civilian population because that too is ignored in favor of any allegation (real or imagined) that's harmful to Israel or its image. The pattern seems to be that anything that is reported from Israel - whether from the public or private sector - even if 99% favorable to Israel or its IDF - it's the 1% unfavorable that's disproportionately and irrationally reported while the other 99% is ignored. Thus, most Israelis are of the opinion they know who they really are, who the IDF is and what it does, and they only have themselves to be accountable towards. They don't feel obligated to explain themselves to a largely hypocritical mass of human rights posers outside of Israel who could actually care less about Palestinian suffering at the hands of non-Israelis. Most Israelis are perfectly comfortable with the mechanisms within their own country - the many human rights organizations and very liberal press - and are therefore convinced their country can self-regulate.