I noticed that in the UI in Maya we refer to transmission_scatter_anisotropy as "Anisotropy" in the Transmission section. That's confusing probably, since it controls the scattering phase function anisotropy, but "scattering" doesn't appear in the name.
In this video for example, I noticed that they didn't really realize that this anisotropy affects the scattering specifically, and probably confused it with roughness anisotropy.
