True, but also keep in mind Jesus’ words to the disciples after one of their very successful missionary journeys. "And he said unto them, I beheld Satan as lightning fall from heaven." (Luke 10:18)
There were definite acts surrounding the life of Christ that "nailed it" as far as Satan was concerned.
“I beheld Satan as lightning fall from heaven.” (Luke 10:18)”
I understand this to be part of the timeless war in the heavenlies that is set out in Ezekiel 28 (and I will bring thee to ashes upon the earth in the sight of all them that behold thee) and Isaiah 14 (How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations!); and its effects felt in Genesis 1:2 (And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.) Genesis 3:13 (And the LORD God said unto the woman, What is this that thou hast done? And the woman said, The serpent beguiled me, and I did eat) and Revelation 12:12 (Therefore rejoice, [ye] heavens, and ye that dwell in them. Woe to the inhabiters of the earth and of the sea! for the devil is come down unto you, having great wrath, because he knoweth that he hath but a short time.)
Of course, like not becoming a teacher and retiring early like my younger brothers, I could be wrong again, however, the good part is I’m no different than the disciples “It is not for you to know the times or the seasons, which the Father hath put in his own power”.
I don't think anyone is arguing that Christ didn't defeat Satan and his forces.
The question is, is he and those same forces still active today while Christ sits at the right hand of the Father, waiting for his enemies to be made his footstool?