I'm not sure if this is true for others, but the first review that comes up for me describes the show as unrealistic and promoting sleeping around, lying, and other debauchery- the main complaints I've seen about this show seem to be that it promotes sex, lying, sleeping around etc. or is ageist and sexist. What these reviewers seem to believe is that the show is either a guide to life that must teach morals directly, or that it is apparently not a tongue-in- cheek comedy using stereotypes to make social commentary in a humorous way. It is not a how-to guide on being a woman in today's world, and since it isn't a children's show, I don't see why anyone would be concerned that the characters are not all traditionally moral, conservative individuals. I, personally, prefer characters that make mistakes, grow, learn, and change, and have diverse viewpoints. This show has that, and for what it's worth, the main protagonist is neither 'slutty' nor wildly amoral and evil, but is instead rather 'normal' and sympathetic.
I would say that the show is witty, humorous, and at times thought- provoking. The characters are, in fact, more complex than the stereotypes they portray, and anything seemingly sexist or ageist is done deliberately and self-deprecatingly. Yes, it IS unrealistic that a woman over 40 would have to pretend to be in her 20s to get a job. That's the point. Would anyone really go into watching a show with the premise that a 40 year old divorcée is successfully passing as a 25 year old college grad in order to get a job and expect realism?
The show takes little kernels of reality and makes them more absurd, extreme, and unrealistic in order to present a charming, funny show that still provides some insight into social perceptions.
Also note that I managed to watch and enjoy the entire season without feeling the need to sleep around, lie pathologically, or mock anyone over the age of 40.