I studied most of the millennial positions over the years and dabbled in each for a while. Eventually believing the Reformed Amillennial position to be closest to the bible. But I had problems with it too. Mainly in the visible, institutional church idea of unbelievers being members. When I realized only believers make up the body of Christ, I replaced their Physical idea of church with the spiritual and things began making sense from that point on.
But all Millennial theories, including the Reformed, call for a physical kingdom. So I reject all of these knowing the kingdom is purely spiritual and heavenly. And unless a person is born again, they will never see it.
The millennial reign is made up of the redeemed as rulers and those ruled (who may or may not be redeemed).
The Scriptures are clear in that.
Not certain where you came into the thinking the millennium was not a blended time, it was never the teaching of the Scriptures, but something some do teach (imo) because they have drifted from the truth and attempting to rationalize what to them is irrational.
Why would Noah proclaim a phenomena that had never been, nor considered rationally possible to the people? Did such thinking prevent the events? We’re not specific “sign” given in which the people ignored, mocked, attempted to refute?
And did not the children wiggle and jiggle in writhing ecstasy while Moses was on the mountain? Did all their worship destroy the purpose of God, or their imagination prevent the design?
Was not the temple destroyed, rebuilt, only to be again destroyed, yet a vast temple complex yet still promised? Would vain imaginations, and rationalizations which cannot purchase the truth of Scriptures have any authority in these matters?
So it is with the deniers of those who hold that the factual millennial reign is misdirection. The reliance upon the fleshly reasoning is ever attempting to conform God’s ways, designs, and purposes.