It’s sad/tragic/horrible they were killed. And probably terribly mistreated, tortured etc before.
But seen from an intel POV, I’d say it means the kidnappers could NOT find a safe refuge to hide the kidnapped boys. There is a lot for the Israelis to study and learn from here. My comment is just scratching the surface. The case is being worked hard, and the guilty will pay, probably a small missile dropped from a drone onto a car. Or many missiles, well aimed.
That is what I thought as keeping them as hostages is a big win for whatever terrorist cell/group grabbed them. I read somewhere they were killed almost immediately though (not sure if that information is correct) which may indicate killers who didn't have a well planned network and just murdered them and ran. There are terror groups operating, but there are also many radicalized young men who aren't plugged in yet and might just seize an opportunity when one presents itself. Shin Bet has a massive intelligence network over most all the Palestinian territories, so they'll probably get to the bottom of it quickly enough.
You're definitely on to something. MANY Arabs on the West Bank are completely sick of their "leadership" if that's what we want to call the thugs at Hamas and the PLO. A fantastic recent read on the subject is in Caroline Glick's recent book "Israel, the One-State Solution." Demography, contrary to "Conventional Wisdom," is on the side of the Israelis, and lots of Arabs see the writing on the wall and just want some respect under Israeli law (which the Israelis are MORE THAN happy to provide). There are more and more Arabs leaving the West Bank, because under the PLO there is no future. Some of them have actually immigrated across the green line into Israel, taken citizenship, and joined the Israeli military because they believe it is the best solution. The IDF has little problem finding "colaborators" which used to provide info for money, but more and more provide it because they are sick of the terrorists.