They don’t really do any real damage and the other critters feast for a few days.
At 600-to-1 odds, it’s not fun for any person/animal to get “swarmed” by a hundreds or thousands. I had to use brooms to clean-off livestock during the last 16-17yr cycle. And there were bite welts.
They’ll make some nice compost in the forests, after denuding the trees and shrubs. I hope the birds remember what to do. Heh.