I think the takeaway is, you're not building something sustainable if you can't attract people with kids. Kids are a very natural and common lifecycle event for people over the age of 25.
In terms of dollars and cents, the notion that you're building a team of "world class talent" that doesn't include anyone over the age of 30 is silly.
Not that the vast majority of startups need world class talent, but that's neither her nor there.