From a quick skim, there's but a passing mention of how demanding newborn care is. Similar for parents needing sleep. Nothing on the stresses of parenting teenagers.

Conclusion: This concept is for 1%-striving-to-be-0.01% women - who can fantasize that they'll be able to hire plenty of childcare help, when they put off having kids 'til after winning their Nobel prizes, becoming Fortune 100 CEO's, or whatever. Too bad that won't actually work for 99% of 'em.