This looks cool, I like this... but if I read the screenshot correctly, it took them 12 seconds from initrd to fully loaded. Maybe this would make sense there, but my laptop boots so fast, those 12 seconds are like two seconds. It would take longer to render the screen than it would just spraying its usual text to the VT.
(Honestly, it spends more time in uefi preboot than it does to actually boot the system.)
That's a taken from the demo `sample-vm-slow-services`, which is intentionally slow to show off all the features.
This is an ongoing pet peeve of mine, how the UEFI of a completely solderd laptop board can take longer than the OS to initialize a fully-known set of components.