It's really good advice, but not for the typical new parents. They just won't have the money to plunk down $16,000 to $32,000 when the baby is born.
For very frugal folks who wait until their 30s to have kids, yes, it could be done.
I think it's very actionable advice for grandparents who have built up a good sized nest egg.
I want to hire my grand-kids to do some modeling work for me so I can put the money into a Roth IRA for them. Might have to split the costs across 3 or 4 years, but that would set them up nicely for retirement.