Thanks for pointing this out, @hivewatcher. Before I have onboarded this person, I have guided him well of what this platform is about as well as the Dos and Don'ts. I'm also confused what have went wrong with him.

Lately, I've been busy with my school activities that I haven't been keen on checking my onboardees posts, so I guess this is partly my fault.

Since I'm not also tolerating such kind of behavior, I have already reported this case to other Community like the OCD.