User @Gina has been busily posting many posts about Preterism and has convinced me, perhaps the most literalist of the folks here that apocalyptic language has certain conventions that need to be taken into account. (Thank you @Gina!) That is, in apocalyptic language "shaking the heavens" and such is not about the physical makeup but rather the political structure of the regime.
For example, we need not understand that one looking over Babylon would see the stars literally dropping onto the earth when this happened:
[Isa 13:10-22 KJV] 10 For the stars of heaven and the constellations thereof shall not give their light: the sun shall be darkened in his going forth, and the moon shall not cause her light to shine. 11 And I will punish the world for [their] evil, and the wicked for their iniquity; and I will cause the arrogancy of the proud to cease, and will lay low the haughtiness of the terrible. 12 I will make a man more precious than fine gold; even a man than the golden wedge of Ophir. 13 Therefore I will shake the heavens, and the earth shall remove out of her place, in the wrath of the LORD of hosts, and in the day of his fierce anger. 14 And it shall be as the chased roe, and as a sheep that no man taketh up: they shall every man turn to his own people, and flee every one into his own land. 15 Every one that is found shall be thrust through; and every one that is joined [unto them] shall fall by the sword. 16 Their children also shall be dashed to pieces before their eyes; their houses shall be spoiled, and their wives ravished. 17 Behold, I will stir up the Medes against them, which shall not regard silver; and [as for] gold, they shall not delight in it. 18 [Their] bows also shall dash the young men to pieces; and they shall have no pity on the fruit of the womb; their eye shall not spare children. 19 And Babylon, the glory of kingdoms, the beauty of the Chaldees' excellency, shall be as when God overthrew Sodom and Gomorrah. 20 It shall never be inhabited, neither shall it be dwelt in from generation to generation: neither shall the Arabian pitch tent there; neither shall the shepherds make their fold there. 21 But wild beasts of the desert shall lie there; and their houses shall be full of doleful creatures; and owls shall dwell there, and satyrs shall dance there. 22 And the wild beasts of the islands shall cry in their desolate houses, and dragons in [their] pleasant palaces: and her time [is] near to come, and her days shall not be prolonged.
The figure of "shaking the heavens" means that there will be a disruptive change in the politic. In the case of Isaiah 13, not only will YHVH trouble the land of Babylon but it will dissolve the very fabric of their governance, never again to be rebuilt. (The "heavens" here are not where God lives but rather the political structure).
The shaking described in Hebrews 12 is that of the demise of temple-centric Judaism. The final destruction of the temple, the obviating of the Mosaic covenant and the reorganization of the program of God to no longer be temple-centric and Israel-centric but to rather be Christ centric is of such a profound nature that it is rightfully described in apocalyptic terms.
The paragraph explains that the things that can be shaken are the things made by men. These are to be replaced with things made by God that are eternal. So for example the earthly temple is replaced by the temple made "without hands":
KJV Mark 14:58 We heard him say, I will destroy this temple that is made with hands, and within three days I will build another made without hands.
So too circumcision and mikveh (water baptism) are now to be performed supernaturally by the "operation of God" while the physical counterparts are now considered mere "shadows":
[Col 2:10-17 KJV] 10 And ye are complete in him, which is the head of all principality and power: 11 In whom also ye are circumcised with the circumcision made without hands, in putting off the body of the sins of the flesh by the circumcision of Christ: 12 Buried with him in baptism, wherein also ye are risen with [him] through the faith of the operation of God, who hath raised him from the dead. 13 And you, being dead in your sins and the uncircumcision of your flesh, hath he quickened together with him, having forgiven you all trespasses; 14 Blotting out the handwriting of ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross; 15 [And] having spoiled principalities and powers, he made a shew of them openly, triumphing over them in it. 16 Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath [days]: 17 Which are a shadow of things to come; but the body [is] of Christ.**
The reign of the messiah is also accomplished "without hands":
[Dan 2:34, 45 KJV] 34 Thou sawest till that a stone was cut out without hands, which smote the image upon his feet [that were] of iron and clay, and brake them to pieces. ... 45 Forasmuch as thou sawest that the stone was cut out of the mountain without hands, and that it brake in pieces the iron, the brass, the clay, the silver, and the gold; the great God hath made known to the king what shall come to pass hereafter: and the dream [is] certain, and the interpretation thereof sure.
In addition there are references to war in heaven, Satan being cast out and a third of the stars being dragged down from heaven with him. But these are likely figures of the Romans who killed 1/3rd of the Jews because they rebelled against Rome (though Zech 14 seems to have predicted 2/3rds).
