I think saying Sarah Hughes was a fluke Olympic Gold medalist is very very harsh. She is not a favorite of mine by a long shot. However she had established herself as a contender going into the Salt Lake City Olympics, and had been a contender on the scene for the last 2(perhaps 3)seasons at that point. I think everybody knew she had no chance of actually winning the gold in a flawlessly skated event, and could easily not medal in a flawlessly skated event, but that is not what occured. However her win was a deserving Olympic Gold medal winning skate, not some moderate effort that won by default since there was nothing better performed like Shen/Zhou's flawed winning performance from the weak post-Olympic 2002 Worlds, or Eltsova/Bushkov's from the error-strewn 96 Worlds, or Yagudin's from a depleted mens field at the 98 Worlds. Her performance was memorable and exceptional, it was inflated by some experts perhaps in some ways, calling it the most technicaly difficult program ever and historic is highly questionable, since Irina has done triple lutz/triple loop and triple sal/triple loop in her performances before(did both at 2000 GP final, and I believe at 2001 Nationals), and Ito in fact has trumped both with her best jumping performances including triple axels and other triple/triples.
That is the excitement of the moment of some though, it is not her fault.
Keep in mind Sarah did win a bronze medal at the 2001 Worlds, over Butyrskaya who was a rival of Kwan's and Slutskaya's for the previous 3 seasons. Keep in mind Butyrskaya not only won Worlds in 99 over a subpar Kwan, but won the short program over both Kwan and Slutskaya at the 2000 Worlds, and should have beaten Slutskaya at 2000-01 season NHK losing a hugely controversial split decision which would have made her the only woman to be undefeated on the GP series that year. So she did rival Kwan and Slutskaya somewhat, and Hughes managed to gain the podium by bumping her off. She did win the GP final bronze two straight years, once again beating Butryskaya at both events. She did win Skate Canada that year, beating both Slutskaya and Kwan for the first time ever, personally I thought Irina was robbed big-time in the short where she was put below Kwan who fell, despite what I considered a smaller error(doubling her lutz), which cost her the win since she won the long over Sarah, but that is just my opinion, results are results. She had medalled at the last 3 straight U.S nationals, and finished a strong 5th at 2000 Worlds. So she had been a contender on the scene for awhile, somebody who tried difficult jumps, was very consistent, reasonably polished, and good enough to step into any void others made with their mistakes. That is what happened in SLC but I dont consider her having "come out of nowhere" or "a fluke" or "won out of nowhere".