Yrupita - that isn't what that article is saying.
The key quote is " But during a time of war, opposition is seen as disloyalty, as siding with the enemy. People will protest at the government, but not the military. "
The military are people's brothers, husbands, boyfriends, sons (and daughters too). Israel is a democracy and everyone is free to speak their mind and do. If people say something which others dislike they'll express that.
If someone had walked around London in the Battle of Britain writing articles stating the RAF pilots were killers who should be locked up they wouldn't have been walking around for long.
That is a comparison.
This
"People leave their liberalism at the green line [the 1967 border],"
and
this
"the peace movement was dealt a harsh blow eight years ago when Ariel Sharon pulled the army and the settlers out of Gaza only for the situation to get worse. Since then there have been 10,000 rockets fired from the Gaza strip." Middle-of-the-road Israelis have lost faith in the idea that you could swap land for peace. "
are the key points.
There are Israelis who care deeply about the Palestinians, who protest the occupation and just want to live in peace but they do not deny their own right to exist. What that first statement means is that in their minds the west bank is a place populated by extremists and/or is negotiable. The 1948 borders and their right to live peacefully are not. When rockets start falling on Tel Aviv their liberalism goes. The only alternative in their mind is to be wiped out.
Land/settlements for peace was the theme of many with many thinking that if all settlements went peace would come. The first trial of this has not demonstrated that equation as a working one. It hardly encourages further trials of this idea.