The Terminus Decree lore literally makes sense and I think that all the people crying about it are lorelets who don't realize Imperial civil war is classic 40k and that the Astronomicon is the single most important thing in the entirety of the setting for the continued existence of the human race.

People who own zero Custodes or Gray Knights models just have a fag right now to be mad about something that changes nothing. This is literally even less of a nothingburger than Eldar wraithbone.