Most people would agree to that, but I think facebook is so big and there are people working there that might be using, even love, blender. The ‘evil’ ones in Facebook don’t even care about Blender or it’s small user base. They care more about those ‘regular’ they can actually use.
If I got hired somewhere where they need an 3D application I would recommend Blender. Maybe it was just that. Some people recommended Blender because they are users themselves.