I found it an annoying article. First of all her background, upbringing is one of privilege and is not typical and therefore not achievable for most people:
She grew up in an affluent area
She got into Oxbridge - good on her but obviously most people don't and it probably gave her job opportunities most wouldn't get
She met her husband at uni - she didn't spend her 20s going out on dates /meeting potential partners, therefore freeing up time on her career.
Her husband became the primary care giver. Good on him and her for coming to the conclusion that she would be the major breadwinner - this is essentially a gender role reversal to most families I know.
They have staff - this is a big one, the women I know who have kept on the same career trajectory pre and post children have all had nannies for childcare (not nurseries). That means that they had to be earning an awful lot of money (over £100k) before they started having babies - this is simply not achievable for most women.
They also have cleaners.
This woman is obviously hard working, clever and literally 1 in 66 million. She is a role model of sorts but being held up as a 'woman can have it all' - she is definitely not.