Yep, I'm for sure no expert here but AFAIK toslink optical should also be immune to the other forms of
signal contamination via RF and other radiated forms of induced noise.
OTOH as I already mentioned toslink as implemented for the use of digital signal transmission in HiFi is badly limited in
bandwidth etc, it's obsolete. But then we all know that optical fiber has fantastic potential, just not as designed way back in the early days of CD, etc. I use optical HDMI cables for the transmission of all my saved music and video files, it is capable of over
100ft or more distances with the proper gear.