Closed source OSes are such a bane.
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.
now we essentially have sleep++ and no option to set it back to vanilla sleep.
For most people these days the primary device is their phone, and so that is the model that modern laptops are trying to follow, as that is what most users will expect.