Seriously. Would you trust the Israeli government to tell you where to be if you were a Palestinian at this point? You’d have to be suicidal to trust them.
Can someone please ELI5 why they think that HAMAS won't just "evacuate" with the rest of these people? What's the point of destroying a chunk of the city that was abandoned? I understand that they are destroying the "infrastructure", tunnels etc. but not terrorists? Am I missing something?
Other than destroying the infrastructure as you mentioned, in an evacuation/refugee scenario it's possible to identify individuals and check them against available intelligence.
Israeli intelligence has had a lot of time to at the very least identify Hamas's chain of command. While the odd low-level fighter might slip through, any leader would get nabbed before they made it into a refugee camp.