The bottom line is most Israelis think of Gaza as a place we shouldn't be in and want Egypt to take care of the border with Gaza and all the smuggling of arms that's passing there. So even though many of them might now acknowledge it was a mistake, the overwhelming majority clearly doesn't think we need to aspire to return Gaza to our full control. Many Israelis just hate Gaza, they don't consider it part of their land, because it's so densely populated with Arabs, and they say they are sorry we didn't give away Gaza to Egypt along with the Sinai (which BTW I believe Begin made such an offer, but Saadat rejected).
So, I am not going to excuse such lack of principles, morality, and common sense.