The American far right is so disconnected from reality and humanity as to render their arguments null and void. I am not arguing their positions.
I don't think though that any mass migration of a persecuted people is an invasion, no matter how much the current inhabitants don't like them.
When the state of Israel was attacked by an existential threat it defended itself, and it now occupies the terrain required to defend itself. The continual threat from Syria more than justifies holding the Golan Heights. The rocket attacks from Gaza on heavily populated areas (and control by Hamas) certainly justify some blockade. The West Bank territory squeezes so close to Tel Aviv that ceding it to a regime that might rocket them is impossible.
The Israelis use of heavy weapons on Gaza is indefensible, as are the continued growth of West Bank settlements. But they fall short of being comparable in any way with the Holocaust.