have the arab race been living in the arabian penisula for that long? since they're nomadic people that move around a lot.
That's a very good question. I believe there have some people in those days living in the peninsula that would be called Arabs and who spoke the language, but it's unclear whether their descendants are still around. I think they still exist, but are dispersed around Yemen. Definitely a lot of those people in the peninsula are not what we would call native Arabs but are Arabized arabs.