some rational people would think kindly like this but sadly not all. there really are those who picks a fight even with the kids just cause their parents /family did something bad.
also you forget how bad wording /tone in news articles can change or should i say steer people's view to a certain way. and if it's celebrity related news then paparazzi and/or social media can multiply that 1000x times. and even if something small was misunderstood once bad press has published it it's sometimes hard to fix it cause people already learned of the first news/ the fix has less views
the people/viewers will only be able to think about it once they look back many years later once the issue dies down or the people in question lay low. and they wonder "huh why did people hate on them when it's not their fault?" there are so many example of this and it's not just on kids but to every famous person out there

i can’t help but feel the hate towards Gongja is exaggerated, no matter what his family did he is a 10 (ish) year old boy. he does not understand the world of adults. Either the guy who threw the bottle has mental issues or he’s being paid to do this by the family.