I would also disagree with that notion. A remix that has none of the original source material isn't a remix, is it? But a remix that branches off and changes up the source material on a very liberal level, and changes the entire feel of the song, but still contains some elements, is still a remix. That's what I was getting at.
Because people have different views and ideas on how a certain video game songs can and should sound, and sometimes that vision may include radical departures from what's there to begin with. Certain songs strike people in different ways, so how you think a song should sound when remixed may be completely different from what I think. To me, remixing is only partially nostalgia: Over my years of listening to this stuff, I've come to appreciate the artists themselves more so than the game factor, and I enjoy a lot of remixes from games I've never even touched. Good way to discover new, fun games to play.
It's not just me saying "oh this song sounds like it should be a techno song and if it isn't remixed as techno it sucks". I've heard remixes of songs that were made in a style I never imagined for that specific song, and still liked it.
As I said, most of the songs I'm complaining about, I actually *do* like. They're amazing songs, but I can't call them remixes. That's the thing. It's got nothing to do with what I think a remix for a song should sound like (in fact these remixes in particular still do capture the feeling I think a remix for the respective levels should) it's that I don't think they meet the basic definition of being a *remix*.
Oh, and one of my favorite remixes is Sonic 3D Blast's Blissful Eruption, a song for a game I've played a very few amount of times, only once or twice actually making it to the level the song remixes, and so I don't *at all* know the source song, yet I still love the remix.