Truthfully, the report button often does nothing because in the end it is "he said, she said" situation. Also, when you see repetitive comments which are just so against your beliefs but don't really go against anything harmful, you just wanna ''unsee'' that person and that's what's the block button for - at least for me. And block button gives u that freedom to basically not see people who repetitively comment things which are just ruining your whole day. I am confused why MDL even has a limit, because other sites or apps don't.