I had forgotten about it after telling the team about this I’ll see if I can get something done tomorrow
Please open a separate thread under Support → Installation and Boot, since your unique system might be facing a different issue and/or a combination of issues, plus we can review the steps you took. 
Tomorrows build [2021-09-21] should have the fix. Please test:
Any build:
- Releases · manjaro/plasma-daily · GitHub
- Releases · manjaro-plasma/download · GitHub
- Releases · manjaro-xfce/download · GitHub
Unstable only:
Tested with an existing installation on unstable branch. No Intel NVMe hardware.
- Installed mkinitcpio v. 30-3
- Re-generated initramfs
- Rebooted
As a result, the module is not even listed with a simple lsmod command.
~ >>> sudo pacman -Qi mkinitcpio | grep 'Version'; sudo lsmod | grep vmd
Version : 30-3
However, the directive that adds the vmd module exists under the path below on the block hook file:
>>> pwd; grep 'vmd' block
/usr/lib/initcpio/install
add_checked_modules 'vmd'
I know my test is not representative and probably any existing working installations won’t be either.
I guess the actual test to figure out if the issue gets resolved would be on new installations involving the affected NVMe hardware using the development images above.
I can confirm a fresh install works on an ASUS Zenbook with vmd. Prior images had UUID errors the same as HP hardware.
21.1.4 stable ISOs should also ship now with this fix.