CA Regarding Icy Weather

52 people called out of the store yesterday(Friday) due to the roads being icy after the snow we received on Thursday. Our SD got mad and now is giving everyone a coaching who called out, and I’m just wondering if that’s even allowed ? The roads were not in good conditions , let alone most people don’t have drivable cars for this weather and/or people have a far drive (at least an hour at most) to make. Our SD’s thing was the snow was starting to melt so we should’ve came in, so are we at fault ?