Someone taught me that it's harder to disprove something than to prove something. In order to disprove that the C-scar is dimensional, you have to prove beyond a shadow of doubt that all the possibilities of it being dimensional cannot possibly be true.
Saying the C-scar was added to the TM is a stretch, but okay. However, it cannot have been added to the TD and the SL, as they are each from the UK and US molds, and these are different molds altogether separated by an ocean of distance.
One then has to not only disprove any possibility that there is a C-scar on the Rick Baker (US) mold but also the UK mold as well. In order to do that, one must be able to physically inspect - in person - both molds.
The claim that the Rick Baker mold has no C-scar is not based on direct observation of the actual physical mold but a small photograph. If the Rick Baker mold resides at LFL, then it stands to reason the claimant would have been at the LFL Archives handling and inspecting the mold first hand. This is surely not the case.
The claimant (notice I'm not naming any names here... I'm more interested in discussing the logic path) has not ever seen the UK mold. Its whereabouts is still a mystery. So to speak with authority on what detail is in or not in the UK mold without personal, physical closeup inspection is such a stretch that we've left the realm of logic and entered into the realm of imagination.