Yeah, that's not logical at all whatsoever, because this is something all prints had in common because it was on the negative - the original original, not because it was an artefact added in some copying process, like transfer to LD or DVD.
It's a bit weird that it wasn't present on some of the 80s video releases but for example in the GOUT, there are artefacts that suggest that it was simply removed by the DVDR process.