There is so many dynamics that come into play on producing a record and the sound that the personnel of both sides of the glass are trying to achieve. Not having any experience what so ever in the recording studio, I think one must and I do, take in the considerations when, where, how, who, economics, and the genre that produce the final outcome of an album.
I remember very well when I heard Metallica's Kill 'Em All when it was first released in 1983 when I was 18 years old on the Canadian label Banzai Records before Electra took control. The sound and the music was very refreshing at that time. I was blown away, it was something I hadn't heard before. One might argue that it sounds out dated listening to it today, but at the time I considered it a break through album and has been very influential in the metal world, there's no denying that. With that being said, don't you think "when" has an influence as well. I would.
How long did the band have in the studio for recording this album? What about the quality of equipment? Both of these fore mentioned dynamics come down to the economics. Compare how long and the recording equipment technology from the date of Kill 'Em All to that of the Black album.
The sound both the producer and the band were looking for? The power struggle(egos, musical direction and influences, etc.) of members of the band and that between producer and artist? There is two sides to the coin here IMO. Some fans might argue the Black album was "over produced" and others "under produced". For me, the sound production on Kill 'Em All captures the raw, intense, power of the band, but I also like the production on the Black album as well.
Also personal dynamics play a role as well IMO, like substance abuse, mental illness, family and sexual/love relationships. To say that these don't play a factor in the out come of the final product is ridiculous. Different degrees of/and different substance abuses has an influence and to say that a herion addiction, or in fact, any addiction doesn't impact judgement, senses, cooridination and decision making in this process, is well, "come on now". There is no comparison between somebody snortin' a few lines and somebody bangin' heroin.
They're are fans of Metallica that argue the band "sold out" on the s/t album and that it was to reach the "masses". The "original" fans of the band before the release of the Black album state this opinion. Many hadn't even heard Metallica before the Black was released and then became fans themselves. Some of the hardcore fans goes as far to say the band was hypocritical with the release of the Black, as it was with Kill "em All, the bands statement in regards to other heavy metals bands "selling out" at that time.
To place blame on one person, people and circumstances for the finished product is an excuse, so black and white and narrow minded. "I think" all parties should accept some responsibility.
Sure, I think some albums are "over produced" and others "under produced" but I make my final decession on the factors mentioned above as well as what captures "my" liking.