The Millennial Kingdom of Christ already happened theory

Are we in a different place in time than we think we are? Are we in Satan’s little season?

Revelation 20:7-8 KJV
7 “And when the thousand years are expired, Satan shall be loosed out of his prison,”
8 “And shall go out to deceive the nations which are in the four quarters of the earth, Gog and Magog, to gather them together to battle: the number of whom is as the sand of the sea.”