That’s a little obtuse. Macs can still poll for certain messages while they’re asleep (Power Nap.)

Macs doesn't need to wake completely to renew their DHCP leases. Bluetooth and Wi-Fi radios can act independently and on their own for this low level operations.

On the other hand, I don't consider my computer to wake up, take a backup, check system/app updates and my mails and handle those while I'm sleeping as a feature, not a bug.

> This is a macOS bug; it doesn’t need an IP address while it’s asleep. Waking up to renew a DHCP lease is crazy.

It's actually not. As a user I'd expect the device to wake up and still have the same IP address via a continuation of the lease.

Yes, the correct way would be a longer lived DHCP lease, but el-cheapo ISP routers often lock down such settings.