The Empire was not long on Endor before it fell. The Ewoks had never had much contact with the outside universe, and so never saw the foreign plagues coming. Every cuddly creature that Luke, Leia and Han danced with that night was dead within a week of the Death Star’s destruction – not from combat, but from highly predatory diseases their immune systems had never seen.
Overburdened by suddenly having to run an interstellar government with numerous pockets of skepticism and resistance, Princess Leia and her freedom fighters can hardly divert many resources to help the Ewoks. Yet those who do venture to Endor bring still more suffering, swarming with their own planetary diseases, or have come to Endor only to make a profit under the auspices of the new “democracy.” When the Ewoks fight back against mercenaries who abuse them, the local settlers are quick to label them savage. They did defeat the Empire, after all.
This is what you guys wanted when you bitched about Return of the Jedi, right?