I don't agree with generalising from the specific (although I do it myself on occasion and berate myself for doing it), but if you are a regular reader and contributor to Mumsnet, you'll understand the different culture of those forums, the hastily written responses, and the willingness of some to jump on bandwagons and not challenge thinking, whereas on here there is thoughtful, considered contribution on serious issues, usually done on a laptop or PC rather than on an iphone. I grant that these views have been posted, but reading the thread demonstrates there is little follow-through of discussion and some posters' comments are just downright gratuitously insulting and rude.
I prefer to read those responsible comments made on Mumsnet, which show the poster has a balanced view, is open to other information, and knows what's going on in the world.
I don't set much store by those provocative comments referred to. If someone's personal experience is that their parents are lazy so-and-so's who have hardly ever worked, contributed little to society, and bring in a tidy income without any effort being put in, then they are going to make such negative observations. It doesn't mean that the whole pension-eligible group is like that. It interests me to know more about those posters, too - if they have had hard-working grandparents who have given more than one could ask by fighting for their countries , bringing up families who turn out to be feckless or lazy, then miraculously the Mumsnet generation of those families turn out more like their grandparents than their lazy baby-boomer parents, that doesn't quite fit, does it? Wouldn't the parents also have that work ethic, usually?