Of course, part of it also came down to the fact that the Shattered Moon World was relatively special. In most places where the space was fragile or entirely broken down, it wouldn't come in convenient puzzle pieces, but rather would come in a form much more like shattered glass. Anyone who had shattered a vase before could understand that although there might be a few large shards that seemingly came together nicely, there would also be countless tiny fragments that were the size of dust that would never quite come together properly again, and would leave gaps in an otherwise repaired vase.
The Shattered Moon World, as a world that should have perished but was still kept together…. Was indeed special in many ways, its space included.