Basically its an Assume-x
You can either report them for an harassment or you can ignore them, as I can't think of any other way when it comes to dealing with the said situation, sadly (?)
- I mean, it is his fault for being short nerved individual who lacks of understanding jokes, but from what I can see, he made a thread about how MPGH has effected him, and mentioned 3 users who in his mind made the forum little less likable in terms of his idea, and all of those users who were mentioned started to dislike the fact how he mentioned them, he is crying about stuff and etc, I thought that was the point of this category and hence what it says when you are in this category, in terms of category's description, he took it as an opportunity to express his feelings, by yes somewhat attacking all of you guys, and someway and/or another made him feel more like he needs to stand his ground, and defend himself, I nor anyone in this forum cannot imagine what it is to be in someone's shoes like him who is short nerved and has no ability to take jokes even if the said user was from the join dates like he said he was.
Be as memery as you like to be, be as jokey as you like to be, but there are people out there who take jokes as a personal attack, and they feel ashamed of it, but fighting against someone who made a thread in the rightful place than fill general with something that does not belong there, then you can't really blame him for bringing up things he liked/disliked, and that was his option, he understood that there are rules in place, yes he does break them time by time, but he can also see that there are categories where said thread belongs to, I'm terribly sorry for going to an useless rant over some nobody in the internet, but there are somethings he and some of you guys need to understand; people are different, you may think you know them based by the threads they make, by it as retarded as it is like Cursed pointed out, be it as spammy as it is, or be is as serious as it possibly is, but you can only prevent yourself from reading them and replying to them, or thoroughly reading the thread and help them out as much as you can.
Internet is internet, whatever or not you care about the said someone or you don't, there are lines in everyone's lives, cross them or don't, that is up to you, its is also up to you to help them out as best as you can.
Sorry for the rant, it made me look stupid and probably/horribly wrong/retarded, but this is what I think and sorry once again for the TL;DR.