It is only 25 miles from north Gaza to south Gaza, a bus token ride away. IMHO, it appears to me that the game plan is to offer them food, medical, and water and tent and sleeping bags there a few days to a week or two and eliminate the starving people from the siege narrative while they try to isolate Hamas from the civilian population. Yup, uncomfortable and inconvenient. But, hey, Israel didn’t start this war and didn’t dance in the streets like many civilians they want to go south to stay safe. It would probably take 3-5 days to have a bus evacuation southward while many would drive or even walk there. The big problem is either Hamas will imbed themselves with the southbound crowd or that a lot of civilians will stay north and act as a shield to provide Hamas propagandists with the civilian genocide from the skies story line for the world media.
“The big problem is either Hamas will imbed themselves with the southbound crowd...”
For this, I think it won’t matter. They can embed in the South, but Israel will have the run of the North and can clean up that place once and for all.
THEN, they can offer the civilians safe passage back to North Gaza, while sifting out Hamas, with the definition of Hamas being any male between ages 10 and 75.