Why did Martin Luther adopt and promote the then-novel Historicist View of Revelation yet reject Revelation as an inspired text?

Luther seems to have been convinced of the then-novel historicist view of Revelation because it made sense to him the Antichrist figure was the then-installed Pope. At the same time, he did not recognize his/Paul's Jesus in the Revelation and said "I can in no way detect that the Holy Spirit produced it." He even put Revelation at the end of his "The Bible" to indicate that it was the text in which he had the least confidence. Does Luther ever explain his apparent inconsistency in his regard for the value of what was written in Revelation? My question is based on the history provided by Dr. Bruce Gore in this video . This question seems appropriate to ask since Luther's estimation of the Pope as THE Antichrist was the largely the impetus of Protestantism and the horrific Thirty Years War . Since this accusation, the once unquestioned Catholic Church became a pariah to a great deal of Protestantism. "A Mighty Fortress Is Our God," arguably Luther's most famous hymn was also arguably a battle hymn against the Papacy: >LYRICS: 1 A mighty fortress is our God, a bulwark never failing; our helper he, amid the flood of mortal ills prevailing. For still our ancient foe does seek to work us woe; his craft and power are great, and armed with cruel hate, on earth is not his equal. >2 Did we in our own strength confide, our striving would be losing, were not the right Man on our side, the Man of God's own choosing. You ask who that may be? Christ Jesus, it is he; Lord Sabaoth his name, from age to age the same; and he must win the battle. >3 And though this world, with devils filled, should threaten to undo us, we will not fear, for God has willed his truth to triumph through us. The prince of darkness grim, we tremble not for him; his rage we can endure, for lo! his doom is sure; one little word shall fell him. >4 That Word above all earthly powers no thanks to them abideth; the Spirit and the gifts are ours through him who with us sideth. Let goods and kindred go, this mortal life also; the body they may kill: God's truth abideth still; his kingdom is forever! How does Luther explain this momentous accusation without contradicting himself about Revelation?