Just because you agree with him means nothing, has he proven his "case" I think not - do you think after Christ saw satan fall that he still had access to the heavens?
Rev 12:9 And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him.
Rev 12:10 And I heard a loud voice saying in heaven, Now is come salvation, and strength, and the kingdom of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night.
If he was not cast out, then he can still accuse the brethren day and night and still has the power of death and Christ has not conquered:
Heb 2:14 Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same; that
through death he might destroy him that had the power of death, that is, the devil;
So what you two are effectively claiming is Christ's death has not destroyed him that had the power of death.
But most deny what is also said in Hebrews:
Heb 10:37 For yet a little while, and
he that shall come will come, and will not tarry.
This is when the power of satan was crushed as Paul said - soon, not a "biblical" soon but an actual soon.
Rom 16:20 The God of peace will soon crush Satan under your feet. The grace of our Lord Jesus be with you.
I guess Paul should have said "biblically soon" so the Romans would not be expecting this for 1970 years and counting into the future.
Good way to make the words of Paul of none effect. And let's not forget what John said at the beginning and end of his revelation :
Rev 1:1 The Revelation of Jesus Christ..................
which must shortly come to pass
Rev 22:6 And he said unto me, These sayings are faithful and true: and the Lord God of the holy prophets sent his angel to show unto his servants
the things which must shortly be done.
I'll get back to you shortly......