Yes, but it's not like any other layouts avoid those issues. You could feed your servers off fat 12/24/48 volt supplies but with how much power a modern server

Yes, but it's not like any other layouts avoid those issues. You could feed your servers off fat 12/24/48 volt supplies but with how much power a modern server can pull you're already converting in bulk even if you don't do that, limiting the potential advantages. For running CPU/GPU/RAM, there is no other option. When you need hundreds of amps at 1-2 volts, you convert that centimeters away if at all possible. A datacenter using DC distribution is still using high voltages and stepping them down in layers. The hassle it avoids is in other aspects of power delivery.