Also completely useless for anything than purely 'selecting' who you let in since I am going to assume a terrorist wouldn't exactly use terrorist185@hotmail.com and then hand the email over when asked.
If you don't like the security measures then don't go there.
But what happens if you are Palestinian like the people in these stories and as a politically aware Palestinian you become active in pro-Palestinian activism because you care about the rights and freedoms of your people? Those are the people that Israeli is targeting if you read these articles.
Israel is full of overly invasive security measures. The alternative is probably just to bar access to the country altogether, or at least bar it to people of certain backgrounds.