No, using "emo" slang isn’t something parents need to worry about too much. It’s just a way kids talk about their feelings. However, parents should pay attention to their kids and make sure they’re okay. Talking openly with kids helps them feel supported in any circumstances. It is advised that the guardian should take care of their loved ones even when they are happy. Try to communicate with your children in every part of their life, it gives them support towards you in any case or part of life.
Source: https://radarro.com/emo-meaning
Source: https://radarro.com/emo-meaning