I low-key hate when idols tell others "don't cry"...

..it's not that deep, they're just trying to comfort the person that's crying..

everything is a trigger nowadays

Y’all are hating everything nowadays

I feel like it might give the wrong idea if they yelled "CRY HARDER!"

crying is normally a negative emotion and thus again generally crying is because someone is upset at something

it stems from nurturing babies i think that if a baby who can't speak obviously cries because they want something or are in distress so naturally the parents and bystanders would comfort the baby and as one get older I don't think that need to "prevent crying" has gone away

Quote from blingyblinger

I feel like it might give the wrong idea if they yelled "CRY HARDER!"

I think the response that the OP was pointing to was "let it all out" or "cry it out"