Maybe "nostalgic" wasn't the most accurate word, just take "conservative", but respecting the first point, it's not a joke... there's something bad associated against Microsoft here. I don't know if this is just a thing about the numerous jokes against Windows as a SO over the years or something else....but when in Spain you receive a bad impression, it's very difficult to change people's mind.
Hmmm...since there's another poster who shares your same idea, you could be right, then. Never thought there was so much hate, though. Maybe it was due to Win 98 presentation?