[CentOS-devel] Why is systemd user instance support disabled in CentOS 7 / RHEL 7?

Hi!

I'm preparing a backup package for Fedora/EPEL 7 [1] that provides a web
server with a systemd unit file for running with the systemd user
instance (i.e. 'systemd --user').

As reported in [2], systemd user instance support is disabled in CentOS
7 due to being disabled in the upstream RHEL package. It is the same
with the latest systemd for CentOS 7 [3].

Unfortunately, the original Red Hat Bugzilla report [4] is not public so
I'm asking here if anyone has more information why this is disabled?

Thanks and regards,
Tadej

[1] https://apps.fedoraproject.org/packages/bup
[2] https://bugs.centos.org/view.php?id=8767
[3] https://git.centos.org/blob/rpms!
systemd/1ff63606a64d814f37c4956854107e049a684754/SOURCES!
0004-remove-user-.service.patch
[4] https://bugzilla.redhat.com/show_bug.cgi?id=1019738