Perhaps the heavy blue tint was deliberate, and not a mistake; we can't say for sure. But regardless, it is in bad taste and ruins the look of the movie. Once noticed, I've never been able to un-see it, and it irritates me to no end. Even my dad, who doesn't look closely at any of this, can see the blue and finds it distracting and wrong. He far preferred the look of the laserdiscs when I asked him his opinion and compared them.
I read through that article, and the part about the sound mixes particularly pissed me off. It disparages the '97 SE mix and praises the 2004 as far superior. I am of the complete opposite opinion. That writer found the great prominence of the music in the '97 mix to be a significant fault, where I find it to be one of that mix's most enjoyable aspects. The over-emphasis of the sound effects in the 2004, particularly in the bass registers, is absolutely hideous and quite un-listenable. This accords with what Laserman said above about matching the films to modern sensibilities, which treat the filmgoer like an idiot--the tendency towards overuse of bass in movie sound these days is really annoying. The '97, from what I can tell, was mixed deliberately to sound like the mono mix in many places--hence the prominence of the music.
The *only* thing good about the 2004 dvd is the level of detail in the picture.