I'm not an expert on linguistics, but I will say that Crete at that time was polylingual. No one is saying that everyone on the island spoke this Minoan semitic

I'm not an expert on linguistics, but I will say that Crete at that time was polylingual. No one is saying that everyone on the island spoke this Minoan semitic language; only the semitic people on the island, and it was a diverse population.