Why is it your business? Maybe she doesn't actually want to be set-up or settle down and is just doing it out of social pressure. Maybe she just dates for fun?
I agree the conversation about men being unattractive sounds dull and you should find other things in common, but again why is it any of your business?
I think those who are overly invested in controlling the personal decisions women making personal decisions generally have something to prove to themselves
All these social messages saying women should "settle down" (or they're naive/slutty/arrogant/will be "left on the shelf") are woman-hating and designed to ensure men have their choice of women who are with them out of "fear" rather than being drawn to them.
The result? Unhappy marriages where women have to be drunk to have sex with their husbands, and are out every night searching for something else because they went for stability over someone they actually are drawn to and whose company they can stand and love.
I don't mean as in hold out for Brad Pitt types - that's an unpleasant and manipulative stereotype.
but women tend to know who they like and who they don't like. If they override their instincts and self-respect for "stability" or just because of social pressure, it generally ends in disaster.
Great outcome 
"have introduced her casually to a couple of male friends who ok arent film stars but are worth getting to know and she was just so dismissive. One of them said he found her disdainful and she should take a look at her own attitude as it is offputting"
I don't understand this. Because she is single, she is obligated to be nice/ideally offer access to her vagina to your (critical, bitchy) male friends just to validate your own opinions?