The commit is here  %_sysconfdir/logrotate.d/ , %_sysconfdir/cron.d/clamav-update, %_sysconfdir/sysconfig/freshclam are configured with %config(noreplace) .
I don't understand how we can make new users use the systemd unit if we keep a bunch of files that should have been removed a long time ago, we don't need any file because upstreamed systemd unit do it all in standard way of systemd.
But let's open a ticket to decide what to do , in the several branches .
Anyway I'm adding a warning to do the simple comand that fixes it all:
systemctl enable clamav-freshclam --now