No one's saying they're solved. They're saying she's perhaps finally on the right track.
I mean, Amberlynn's been a staple lolcow for years. People have thrown a ton of shit at her in that timeframe, telling her what she should do in order to lose weight, showing concern for her mental well-being, and not wanting her to die from food. Isn't it possible that all that has sunk in and we're seeing the beginning stages of betterment?
She has everything to lose if she fucks up and goes full-blown Smuggylynn this time. She might be more aware of that than we know.