It is a pity that the writing is so impenetrable (by verbosity and by the unlikeability of Cusk) that it does obscure her attempts to put her finger on things that are problematic about relationships between men and women.
Somehow I think she is being blasted for having an ungrateful tone, and this is unfair. Should she be grateful for having children, for having work, for having had a spouse who took care of the children? I like to think I see these things as blessings but I know many men wouldn't and would not be thought less of for it. And unreasonable as it is, I get her ramblings about how the children did come from her body and she did the 9 months of building them inside her, and the however many following months of milky 24 hour stubborn physical endurance.
She's a shocking bad writer, she has written some really vile stuff as fiction, she is not as clever as she thinks she is and I wish she would develop some sense of humour, or irony, or generosity, or magnanimity - any one of these seasonings would perk up her dreary pompous writing no end. And, Goddammit, I wish she wouldn't be so cavalier about the word "feminist".
But I think she's trying to write about something about how family life and its rupture fucks up women more than men, and it could have been interesting, and now I am even wondering whether our reluctance to engage, apart from all the very good reasons stated very clearly on this thread, is also for the bad reason that no one wants to think about how families are designed to benefit men not women and they do a very good job of it, at the expense of women in many cases.