It maybe good for popularity for mental health is more important and it goes down the drain because we know idols are lurking on social media
In kpop and entertainment industry as the whole, most outcomes actually will lead to mental health issues anyway. It's not a good careers choice for anyone mental and physical health to begin with. Successful groups, flop groups, even mid groups with okayish careers will all facing this mental health issues for different reasons. One is because they are too successful, one because they have no careers or money to pay their debt and one will always be afraid if they will flop next day or get replaced easily by newer groups.
Maybe the company can control their idols social media, the least they can do to protect their artists mental health.