I think that there are some posters here who are really understating or misremembering how damn good they were/are (though they appear to be done now). This isn't a band that dressed in '70s clothing, covered an Otis Redding song and then called it a day, although the way Pearl Jam and Nirvana dominate '90s cultural discussions, it starts to feel that must have been the case (for the record: I love those two bands, as well). Other than albums put out by the aforementioned two bands, I would argue that there was not a better rock album in the decade than "The Southern Harmony and Musical Companion." Listen to it. Seriously, just listen to it. Coming off the huge success of "Shake Your Money Maker," it starts with a bang with the two singles, "Sting Me" and "Remedy," which is pretty much their signature song and on the short list of most rock 'n' roll rock 'n' roll songs ever recorded. They slow down the tempo for a couple of tracks, free wheeling a little bit to basically set us up for one of the most blistering Side 2's in LP/cassette history: "Hotel Illness," "Black Moon Creeping," "No Speak, No Slave," and "My Morning Song."
They've had six No. 1 singles on the mainstream rock charts and a slew of top 5s and top 10s. I will concede that after "Amorica" and arguably "Three Snakes," the songwriting wasn't as consistently great, partly because they wanted to grow and experiment as a band. But there are gems on even the lesser albums: "Virtue and Vice" ("By Your Side.") "Cypress Tree" ("Lions.") "Another Roadside Tragedy" and "Tornado" ("The Lost Crowes.")
This is a great, great band that made great, great albums, wrote great, great rock 'n' roll songs, and put on great, great, great live shows. In no way, shape, or form do they fall short due to quality or commercial success. They have both in spades. The Achilles' heel is influence, though it's interesting to think about a world where Nirvana doesn't break, and the Black Crowes, instead, usher in the end of hair band nonsense.