None of properties set there do any "dangerous thing" for filesystem permissions (at least for now), so do not require it. This is mostly to keep compatibility with %post rpm scripts (kernel-qubes-vm at least). QubesOS/qubes-issues#2412
Those options are no longer needed, but lets not reject them to preserve compatibility with older scripts QubesOS/qubes-issues#2412
fixes QubesOS/qubes-issues#1209