There's plenty of legit and good uses for FB. Some people just like to sneer at it and pretend to be too cool to use it. Aggron's a bog standard, and sadly more common these days, social inadequate who craves attention. By typing clever stuff like "faeces" instead of "face" he thinks he's displaying a high level of intellect, above the majority on this board.
He still doesn't realise that the majority of the forum thinks he's just a stupid ****.
The group mentioned in this thread seems designed to appeal to the Mail/Express type readers, who similar to your example, read stuff like "6 million of your taxes a year to keep this Muslim terrorists wife in a mansion, but old Bert here gets 4 pound 50p a week in a pension, LIKE if you Disagree, IGNORE if you think its right" and think "that's awful, it's on the internet, so its obviously true, and I think its wrong, lemme like it and comment. I'm not racist but..."