There have been some more "hardcore", for want of a better word, feminists who do seem to promote the latter, with one of the big ones coming to mind being Gloria Steinem (who, incidentally, is being parodied in the Family Guy clip posted as I was typing this up, thanks BrawlMan), but for the vast majority, what you said is definitely true. It's just that the louder/more extreme voices on either side tend to get heard the easiest by those who want to dismiss them.Society should support any woman who of her own free decision wants to become a mother. It should also support any woman who of her own free decision does not want to become a mother.
Thus I am perfectly happy for Brett Cooper to be a wife and mother. Her life, her choice. However, if she wants to shame and abuse women who do not want to be wives and mothers, encourage others in society to join in that shaming and abuse, support political movements that want to restrict women who have other ideas, then she can go fuck herself.
Feminism as a whole has put a lot of thought into what women can do. Much of this has been thinking about how they could be something other than than a wife and mother, obviously because that has been the novelty that has needed most investigation and consideration. But it's really just a right wing straw man to think that feminism has ever been about telling women not to be a wife and/or mother.
I say that as someone who considers himself a feminist. As well as being very much in the Spike from Cowboy Bebop camp when it comes to strong women characters, but that's a different story.