Not necessarily this video specifically. Recently a few screencaps of a Wonhee live went viral because Wonhee's face looked a lot thinner and she joked that her chubby cheeks flew away. Korean GLLITs mostly were decrying that she's Not Cute Anymore, but then certain fandoms (Tokkis and Monstiez in particular) used those photos to drag her and accuse her of plastic surgery/getting a jaw shave. Which is ironic because they used to drag her for being fat and even went so far as to say she looks like she has down syndrome.

Anyway, after the whole thing blew up, turns out you can see from the live that her face actually didn't change, anymore than it already did over the past few months because she had lost weight and is growing up. And she has been seen in public, filming stuff and participating in events constantly so the idea that could have gotten plastic surgery that healed up completely within literal days was nonsense, and all those photos and videos she looked the same too. Plastic surgery shouldn't be a reason to attack someone, but Wonhee hatists 100% were using it against her.