I'm on a low income and certainly can't afford a nanny, I'd love to have one though but not 24/7.
I would never begrudge a woman who can afford to employ full time staff, presumably so she can have a successful and fulfilling career and have the freedom to go out to partake in hobbies whenever she pleases, much like many men whose wives perform unpaid nannying/housekeeper duties.
Some parents might have full time staff including nannies, cooks, housekeepers, etc, but are still fully involved in the stuff that they deem important as a parent and can put their full energy into this, but don't have to sweat the small stuff.
And really it's like a spectrum isn't it... usually people have some form of help, like supportive partner, family and friends, nursery, wraparound care, babysitter, etc. They are not less of a parent than a single mum who does everything herself with zero help, it's just a different set up.