Yulia got punished so are we all happy? What she did was not good sportsmanship but it's not that big of a deal. There were repercussions to her action which she is taking and I assume it won't happen again.
Why does it really matter what her reason for not going was anyways? I can tell you though there's no way she thought she should have won with the way she skated. More likely she was embarrassed and ashamed and not in the mood to celebrate. Further, aren't ceremonies sometimes held right after the individual event and other times not until after all the disciplines have finished competing? There's a chance she was out of it and actually forgot. It's not that likely, but it's really not a huge deal.
Bottom Line. She skated badly, she was upset, she skipped the ceremony, and now the consequences are showing her that such behavior is not acceptable. I doubt it will happen again and am sure Yulia learned her lesson. Everyone should just get over it. Entitled because she didn't win? More likely she thought that she should have been off the podium with the way she skated. I don't think I've ever heard Yulia complain that her scores or placements were too low, sometimes she's mad when she makes mistakes, but that's different than thinking she wuzrobbed of a higher placement. Sheesh.