While some of them have expressed desire for beachfront houses in Gaza, I think the parent was referring to lebensraum. You may also consider whether there’s any similarities to a potential Final Solution to the Palestinian Question. Maybe instead of shipping the Palestinians to Madagascar they’ll ship them to Egypt or Jordan or wherever (for now they’ve concentrated them in camps around Rafah).
But remember, per the IHRA definition of antisemitism, discussing similarities between the acts of Nazis and the acts of Israel is antisemitic.