They were talking mostly about all those centaurs in the earlier pages, who were starved and tortured. Philly can carry a human on her back, but there was no way of moving heavier creatures like other centaurs, especially when there were so many. :( If the slaveyard is destroyed by Folkvar, however, they will be set free.
They were talking mostly about all those centaurs in the earlier pages, who were starved and torture