While reading the QuickStart for disko, I saw this line:

However, you will need to include the partitioning and formatting configurations that you copied into /tmp/disk-config.nix in your configuration, rather than allowing NixOS to generate information about your file systems.

Is there a reason why one shouldn't just let NixOS generation information about my file systems? I'd like for my installs to be as vanilla as possible (as though they were completely installed manually) so I'm curious what pros and cons there are to just continuing the normal NixOS way