I might get flamed for saying this on here, but here goes:
I'm only as snooty about it as the Middletons are; if hardworking, honest, and yet untitled people are not good enough for the Midds, then the Midds are not good enough for the aristocracy. The Spencers might have started as sheep farmers and each family member in the aristocracy might have their 'Carole,' but these people in their ancestry had people who WORKED and worked hard. Being a knight or soldier in the ranks is no small thing, especially back then and farming was no cakewalk as well. I don't think the Midds would have looked twice at "Johnny Spencer Sheep Farmer," but would look more than once at "Johnny Spencer, Earl Spencer." What makes them so good that they have the right, right now, to look down on epople who won't give them something vs. someone who has a title and they gain something out of it? If it takes money and a title to get a Middleton girl or James into the marital bed, then something is wrong and not just with the aristocrats.
You have to look at it from both sides. If Kate is snubbing someone because they aren't connected enough, then she isn't good enough for someone like Wiliam and Pippa is not good enough for a Patterson or a Percy. It's Pippa and Kate who have wanted ot be taken care of and have values where they are kept and don't have to lift a finger; they are the ones who have barely worked and have been husband hunting, not working like 21st Century young women. Kate chose to pork her way in and Pippa is appparently burned from supposedly going after a married man, how are thse modern values? If Pippa wants to paly by rules established in the 1800's, then she had better realize that she is an outsider in that respect and always will be. She's playing by values that don't accept her and if she keeps trying to break into these circles by acting if she is there by right of birth, then quite frankly she has no business being surprised.
I feel like I'm watching karma happen; Pippa ignores nice guys who might not have vast amounts of cash in their bank, but would be loving husbands; so if average men are not good enough, it's karma to see Pippa being only tolerated, but in time rejected the same way she rejected nice guys and used the ones she now ignores in pursuit of a higher title.
She is playing by rules and values that fundamentally reject her and she can't just pick and choose. I think she might do well with some scummy social climber like her in the States, which is qutie frankly the best she will be able to do if she's been messing with a married man in the UK. No matter how much the press might in fact campaign on her behalf, the ranks are still closed against her and they always will be. A constant fashion parade like this isn't going to help, I know that much.
It's been said that Pippa has a 'list' and that she only wants to marry a man that is able to fulfill her requirements. What about her? She doesn't have a title or a vast amount of cash in her own right and I don't understand why the DM (and Midds) can't seem to comprehend that the aristocracy is not going to line up their sons to be picked by Pippa. I am sure that Pippa doesn't check a lot of boxes herself and she would best let go of a title and estate and work on finding someone decent.
Plus getting groceries later in the day after going to work! 
