Server workloads are different from client workloads here, and network/IO heavy workloads are different from CPU heavy workloads. You'll get tend to get misleading advice from people only familiar with one of them. Especially if the client is an asymmetric architecture like ARM has and Intel is moving to.

Swift's design is made to be good for IO workloads on smaller clients, though it hasn't got as many tools for the other end.