Ohh, you're absolutely right!

barebone server is a thing fwiw: A product that comprises a motherboard installed in a case with PSU. Customer adds CPU, memory and storage devices to make a complete usable server. We typically buy servers in this way because figuring out what motherboard fits in which case is a pita, conversely buying complete servers is more expensive and potentially runs into inventory issues at the vendor. So possibly they are running bare metal servers that were also barebone.