Have we even been told why they are trying to overthrow the demon kingdom? It's just a stalled plotline that serves no point whatsoever just dragging the manga out, and it makes no sense in how they are doing it ether. Just leave and go home. It does seem like there is reason to overthrow them, but the MC has no part in it after kill that dino, hell what was the dino even doing, it was just roaming around distracting forces from over throwing. Its dead, your forces can just go for it, but they are waiting for some reason despite having the advantage. Its just such a boring plot line that no one cares about, that makes no actual sense. The MC also is also in hiding which is the last thing that we want to see. We want to see her doing crazy things, she is a OP protag for f's sake. But yeah not surprised if a axe strikes soon, the author just is wasting so much potential dragging this out.