Is the supply shortage fabricated? There's a ledger in the grove's warehouse that catalogues the usage of food and medical supplies, and it says the druids are almost out of everything. Goodberry and healing spells would make this impossible of course, but it's not uncommon for tabletop game adaptations to selectively disregard or forget about the existence of certain spells.

That being said, I didn't find the druids all that contemptible. Even Kagha, for all she can do, comes off more like a woman suddenly thrust into a role she's unprepared for and whose desperation was taken advantage of by the Shadow Druids, rather than actively malicious. I'd argue Rath is more unlikeable, as for all his whinging about Kagha's leadership, he never extends more than a token effort to oppose it. He does join on the tieflings' side if the tensions escalate to violence, I'll give him that, but it's too little too late at that point.