Khezu is a [REDACTED]

Friends in discord were riffing on the idea that Khezu originated as a Wyverian Guardian construct species that eventually evolved and rejoined the environment like Arkveld, and the more I think about it the more it makes sense.

Besides the pale complexion it has in common with guardians/wylk, Khezu is also historically the source for Pale Extract that can be used to craft Mega Demondrug/Armorskin. In Wilds that ingredient is named Nourishing Extract, which has the same icon and description as Pale Extract. The only monsters that drop Pale Extract are the Wyverian constructs.

Is this a stretch or are we onto something? If you disagree, is it only because you don't want any reason for Khezu to show up in Wilds?