Oh. From the title I thought it would be the Z machine at Sandia labs: https://en.wikipedia.org/wiki/Z_Pulsed_Power_Facility

"First off, it is really low level. From what I understand, not even the people at Infocom wrote raw zil. Instead, they used Lisp macros that generated zil."

Is there any evidence of this? The standard guide to ZIL (written as an in-house document at Infocom for new programmers [1]) presents it very much as if people would be writing it directly. It's also not that low level, only slightly more low level than Inform 6.

[1] https://archive.org/details/Learning_ZIL_Steven_Eric_Meretzk...

The article mentions the Z-Machine as the earliest fantasy console. I'm wondering whether CHIP-8 would qualify?

https://en.wikipedia.org/wiki/CHIP-8