Just poking in on the Demon Mama video I linked, and why I corrected my post above.
The evidence was that a Github account called "Laurelai", that used art from her "BimboPolitics" identity had forked SE.
I don't think there's any evidence that anybody other than the shinigami-eyes account itself has actually contributed to SE.
https://github.com/Laurelai/shinigami-eyes