Why are there so many bullying accusations on celebrities?

Recently, forum sites like Naver and Daum have been bombarded with bullying accusations against celebrities.

These accusers ( or victims, giving them the benefit of doubt) have claimed that certain celebrities bullied them during middle school or high school days, providing yearbook pictures. Most of these have been false accusations,  and many have also been debunked by their companies, but these ‘jokes’ have the potential to destroy careers and reputation. Not long ago, an alleged victim of such a case was exposed to be a 28-year-old man who was just doing it for 'fun'. 

This, also in turn makes the actual victims of many cases scared to come out. Stars like Seventeen’s Mingyu, (G)I-DLE Soojin, and SKY Castle actors Kim Dong Hee and Jo Byung Gyu have been caught in these rumors.

What are your thoughts about these rumors?