There is so many things wrong with this statement. The Palestinians never invited these European immigrants into their lands! They where un-welcomed land grabbers who had no business going to Palestine in the first place.
Being invited or not, does not in any way negate the rightful claim of Israel to exist - and I'm not talking about the biblical claims. People have been moving around since mankind's inception for various reasons.
How did the Arabs came to live in North-Africa and Persia in the first place?
How did Europeans came to live in America, or Australia for that matter?
How are millions of Iranians living in the West as of today? Should we expel them because we did not invite them to our place?
You might have a point about Europeans, if these land grabbers as you called them, were really European, and hell bent on driving all the Arabs out. But the fact is that as of today, most Israeli Jews are not of European ancestry, but are Jews and their descendants that were kicked out and expelled from Arab countries after the existence of Israel.
A large part of the 'Palestinian' Arabs still live in Israel. Next to 6 million Jews, one and a half million Arabs (Muslims and Christians) live within Israel.
So it can happen that you no longer see Jews in the neighboring Arab countries, while you can encounter many Arabs in Israel. The exiled Jews from Arab states were welcomed in Israel, just as later the Jews from Russia and Ethiopia. With the Arabs/Palestinians from Israel, the reverse happened. They were treated like dirt by the Arab countries, because after all, they were only refugees and they should remain that.
The only land grabbing I oppose is the one on the Westbank, where Israelis settle on Palestinian land at the cost of the inhabitants residing there.