Gave it a spin and it doesn’t appear to be effected by this setting. Here it is at 200, which has an obvious effect on the trace, but the dilated pixels are still visible. It’s still visible at 0 as well. Default was 85.
Interestingly, unlike the normal threshold setting, it actually extends outside the mesh itself.
It also seemingly fades out the closer the camera vector is to the surface tangent, and gets stronger the closer you are to the normal.