> I see it more as hostility to the HR policies in place at some of the companies. A new parent at facebook gets 4 months leave after the birth and then can take another 10 weeks of family leave.

It's not like facebook employees typically have 10 kids. The benefits you mention happen once, twice and rarely three or more times in a lifetime.

This policy also means that younger employees will be able to enjoy the same policy if they become parents in the next 20 years.