For the benefit of the rest of us who are unaware, what was incorrect?
Star Wars/A New Hope was never released with just a stereo soundtrack. They used the Dolby Stereo mix which is a 4 channel matrixed surround encoded into 2 channels. I have done a test of the earliest LD archives tracks and have been able to extract the 4 channels from it. I held this misconception until just a few months ago. It seems that Lucasfilm gave them the 6 track audio and CBS/Fox did their own surround mix of it for the 1985 release. He was no longer there when they did the DE, but I would guess that the process was probably the same. I love the description of the transfer process and that they did the surround encoding of the 1985 version form the 6 track audio (it kind of explains why the 1985 ANH audio is identical to the 1977 except for the one line that was added where the 1993 audio has many pieces taken from the mono-mix but omits that line, not to mention the different dynamic of the 3 different audio versions).
He makes a distinction between the recordable video disc format and LaserDiscs. I have no doubt the early recordable video discs were made of glass.
He also seems unaware that the the earliest LD releases were before ROTJ came out and that all of the OT was released with the original theatrical stereo tracks (meaning Dolby Stereo encoded surround sound) had been released before he ever started there.
I usually take all such interviews at face value that they are providing terrific first hand knowledge of their experience, but when they speak of their second hand information they may not be the best source.