It's not just on here, sweetheart. There are plenty of mean people out in the real world too. 潮流粉丝俱乐部 is no different from the outside world. What, 你 expect everyone to hold hands together and sing Kumbaya while handing out 浓情巧克力 to each other? No, the world doesn't function like that. 你 might as well just get used to the fact that mean people exist. 你 can't deny the fact that all of us are mean at some point in our lives.
Because internet, my friend, is a place where people feel limitless to post anything since 你 can't identify them. Don't give a care about those people.
Because some people on social networks are mean because 你 dont know their identity so they think that they can f@uck wits so yeah they are just cowards behind a computer screen.