When someone makes a retro inspired game today, it's 2D, generally pixelated and often MIDI-like audio.
I think you're probably right about that example, but that's because the difference in tech changed so drastically from the 80s to late 90s. We went from very small resolution, small # of colors and 2D engines to 3D engines. The difference from 2002 to 2015 isn't nearly so vast. Warcraft III still holds up pretty well.
Leisure Suit Larry in the Land of the Lounge Lizards - 1987 King's Quest: Quest for the Crown - 1984 Space Quest: The Sarien Encounter - 1986 Police Quest: In Pursuit of the Death Angel - 1987 Conquests of the Longbow: The Legend of Robin Hood - 1991
Counting from the viewpoint of 2002, not 2015.
Also, you're using the first games when I was thinking of the later ones in the series (say, King's Quest V era); they definitely came across as retro to me and my peers in 2002.
For comparison's sake, I feel like in 2002, I was thinking of games like the Sierra point-and-clicks (Leisure Suit Larry, King's Quest, Space Quest, Police Quest, Conquests of the Longbow, et al) as retro and most of those would have been in that age bracket.