Or fantasies about a past that never existed, fuelled by highly competent duo/tritone offset reproduction that made some prints out to be much more than they ever were in reality.
Only up to a point - wonder if they'd be so nostalgic if they realised that the variety of surfaces were often rather chintzy impressions of fabrics or high end mouldmade papers - and were often only available on limited (or one grade, if it was a 'portrait' paper) grades, and that some other papers had very drastic characteristic curve differences between some grades (owing to manufacturers trying to fill out the grade range on extant products - cf. Kodabromide). The other half of the mythos was simply that particular manufacturers were the first to achieve universally desirable results, like Agfa delivering a true grade 5 (by today's standards) on an enlarging paper, or Ilfobrom having a much more consistent character across grades (and such a close relationship to Multigrade that I suspect Ilford could very easily do a new Galerie if there was the market).