I think both parties are, or potentially are, in the wrong.
I completely understand why Maxx is not believed. He is always deprived of attention and is always using sorrow or rage to pick it up, no matter how wrong he is. -insertguaranteedreplies-
Ben is being a completely insensitive idiot just because he can "get away with it on the internet because it is not a written rule". He's getting the same hate here that he would in real life. If you can imagine a sad person walking into a crowded funeral parlor and Ben just runs up laughing in his face making jokes about his dead uncle, I'm quite sure that it wouldn't go unnoticed.