SFM is Archaic, if you're going to animate, use Blender. VNE really only has a character creator, basic easy to learn animator, and easy shareability going for it.
Personally i used it to make a basis for my model so i had a reference to go off of.
The meshes in VNE are atrocious, so many useless polys that do nothing except tank performance. That and they STILL don't have an export to FBX or GLB last I've heard. so you have to make all of the facial animations and rigs again by hand.
View attachment 5562234