No, it was referring to 60s and 70s initially, unknown, semi known etc but it broadened out eventually to include the funky stuff, the funky stuff went too far IMO and had a detrimental effect on venues, certainly wasn't my preferred listening on a night out. It was simply as I said a term applied by others to differentiate the nighters in question, and later soul nights from those that played the classics.
People always try and complicate matters. Half the tracks listed here, most intact wouldn't have been considered for some venues as being good enough (not saying they are bad records either). It was all an attempt to get the nighter scene back to the progressive attitude of Wigan's main room, Stafford, Blackburn, The Wilton etc etc as the nighter scene around 2000 was simply going through he motions.