UPDATE: Additional context from Orion Pobursky[0], the LDraw.org's webmaster:
> The https://Stud.io has been historically bad with attribution of their sources. LDraw had to contact them directly to get them to acknowledge use in their about page and most average users still don't know that the Stud.io's library is back by LDraw.[1]
> The https://Stud.io has been historically bad with attribution of their sources. LDraw had to contact them directly to get them to acknowledge use in their about page and most average users still don't know that the Stud.io's library is back by LDraw.[1]
[0] https://wiki.ldraw.org/wiki/Meet_Orion_Pobursky
[1] https://twitter.com/billtfish/status/1636435679076057089