While only the 97 SE was labeled as such by Lucasfilm, I don’t think that is a reason to limit calling only the 97 version the Specaial Edition when it contained so many major changes to the films that have remained in following versions.
Only the 1997 releases are called special since that was the last one they actually really cared and put effort. All other releases are just “normal”. At least, that’s what they want us to think and that’s what LFL thinks. In any case, the 2004, 2011 and 2019 editions are not special in any form to anyone, so I just don’t understand calling them such. Why not just say the DVD edition for example? Or like there was talk about how the LD release in 1993 shouldn’t be called original, then call that the LD edition.