I am amused by your card-palming: a "host country" where you were born is your home country, and that's doubly true if you speak a version of the language.

"The Palestinians don't speak a local language at all."

Jews "spoke" Hebrew like Catholics "spoke" Latin: only the very educated could converse in a scholarly language.

Using your argument, you could say people who spoke Yiddish and Ladino weren't Jews. Languages and religion evolve. Jews two thousand years ago would be baffled by your form of Judaism, and by your accent as well.

Your "most estimates" is nonsense. See https://en.wikipedia.org/wiki/Origin_of_the_Palestinians#Genetics

Smart Zionists stay away from the DNA argument because of this awkward fact about most of the Jews who went to Israel before 1948: https://www.livescience.com/40247-ashkenazi-jews-have-european-genes.html