Even really old ones. They might ask for their property that we confiscated or something. We can't have that now, can we? Israel Maztav has a very interesting commentary on this:
These people had no intention of demanding any money or property from
the Egyptians or their government. But what if they had? What if they
wanted to move back to Egypt? The Egyptians would have said no. So why
do they complain so much when we say no to the 'Palestinians' moving
back? You can bet that those 70 and 80-year olds would at least have
been willing to live in peace. Are the Egyptians afraid of Jews moving
back? Do they feel guilty about what they did to their Jews? Do they
realize that if the Jews ever took them to an international tribunal
the Egyptian government may not have a leg on which to stand?
Dude, you are over-thinking it. They are Jews, therefore any logical rules will not be applied to them in Egypt. End of story.