Well, so that's 78% of Nothoi's income.
And as I said, they're warring Fronen. Without receiving auto-recruits from Reeds at least.
Certainly, they could and should do better while IVF is doing good, but you can't compare the two because you're dealing with different issues. Too little population and being the focus of BT's biggest military power are issues that IVF doesn't have to deal with and Nothoi does.
And just so you know, during the invasion when Thalmarin had Unger alone, we sustained 17k CS of which 10-11k was mobile. Because of that we could sporadically take a few regions back from the undead, but we were basically running on a city that was losing peasants and could be fed only on the spare food of OG, Sint and what little we could harvest ourselves.