>>Why does Q repeatedly allude to scripture?
Because the scriptures present that there is evil within man, and that evil is satanic (an adverse spirit that is not Gods children) in origin. Too many scriptures to cite in full, but in brief, Mark 4:15, (where the Word of God is sown, Satan enters the hearts of (all) man, to steal Gods Word). Universal principle applicable to all mankind. Acts 26:18, 2 Cor. 4:4, Eph. 2:2
Jesus also tells us that evil originates internally, within everyone. There are/were no exceptions other than God Himself in the flesh. Matt. 15:19-20, Mark 7:21-23 and Matt. 5:28
Q and other investigators KNOW that satan is real, based on the evil and deception they have witnessed with their own eyes/ears within the powerful elite.
Anyone who pays attention to the world of people around them know evil is real as well. They may not connect this fact to internal evil and understand it's satanic in origin. And most will definitely NOT connect this fact to their own internal evil, not even Q or others. What Q and team are after is only what they see on the outside. The "real" perp can not be apprehended by anyone other than God. Why God created and allows this evil and evil entities are other (scriptural theodicy) questions altogether.
But the basic Q premise is scripturally SOUND. There is evil. That evil is satanic. Period, end of debate from scriptures.
And YES, we are all commanded by scripture to stand against that evil and to war with it, starting with our own selves. If we see the fact in ourselves, we'll see it much easier in others.
Q does seem to understand that this "fight" requires spiritual/scriptural guidance. And he/she is right in that sight.