Fans will continue to debate/whine/defend/cry foul/etc. for years and years to come. It's been 16 years since Nagano and you can still get a 5+ page thread about why Michelle should have won/why Tara deserved to win. It's the nature of figure skating fans.
What's important for me is that both Yu-Na and Adelina have moved on and are looking forward. No, I don't think Adelina deserved the scores she got but, yes, I do think she made a very strong case for gold. To me, she skated like she wanted it more than anyone else that night and for that reason, I was fine with her winning even though I thought her scores were too high. The downside for Adelina is that win has complicated her career b/c now she's in a position of needing to live up to what she did in Sochi to validate her win there. She'll be under a lot of pressure going forward. I think she's immensely talented and I'd love to see her succeed but the point is she has her work cut out for her in the coming years...
Yu-Na was able to exit the sport with her head held high though I'm sure most of her overzealous fans are convinced she sits at home crying about not winning in Sochi and throwing darts at a picture of Adelina's face.

She's moved on, she's happy, she's starting the next chapter of her life away from figure skating and I'm thrilled for her.