/etc/machine-id randomization on ArchLinux

[hotcapy]

Hello!

"All About Tor" article on Firejail's website describes creation of script & systemd service which generates a new machine-id on system shutdown. Is this script compatible with ArchLinux "as is" or should I change something in it before usage?

#!/bin/sh -e

rm -f /var/lib/dbus/machine-id
dbus-uuidgen > /var/lib/dbus/machine-id
cp /var/lib/dbus/machine-id /etc/machine-id
chmod 444 /etc/machine-id

exit 0

I wasn't able to find much info about machine-id on ArchWiki, only manual pages for various UUID generation tools. There is a random_machine_id package in AUR, but it's solution differs from one suggested by Firejail:

#!/bin/sh    
 if [ -f /etc/machine-id  ]; then        
   rm /etc/machine-id && \    
   systemd-machine-id-setup    
 fi

1. Firejail's script acts at shutdown, uses dbus-uuidgen, mentions /var/lib/dbus/machine-id and chmod.
2. AUR's script acts at boot, uses systemd-machine-id-setup, not seems to mention /var/lib/dbus/machine-id or chmod.

Also, Linux Overview article by Privacy Guides suggests setting machine-id to constant commonly used value instead, like one from Whonix/Kicksecure OS.

At least in my case, /var/lib/dbus/machine-id is a symlink to /etc/machine-id.
So, what is the best approach in this matter, and how to make it work on Arch?

Thanks in advance for your help!