According to WT theology, it would take ONLY ONE perfect man to remain loyal to Jehovah under test.
Jesus did that, and answered the challenge.
Why therefore must every perfect human be tested after the 1,000 years?
Makes no sense.
Also, should not ALL humans be likewise tested - children born after the 1,000 years?
Are all humans going to be submitted to an annual performance review to determine their worthiness to continue alive?
Sounds pretty sci-fi to me.