The guest workers are foreigners with no legal right to vote, how can they becomine "a disenfranchised majority" when they form no part of the polity and never held the franchise to begin with?
You are splitting hairs (though beyond the technical I doubt that the essential point was misunderstood - even by you, but to please the language purists maybe I should have said "never-to-be-franchised" majority.
And, by the why, only a few (citizen or otherwise) held, or holds anything approaching a "franchise" even now.