I’m not sure that I buy the argument that childless leaders are a bad thing. It was long argued that childless leaders are more objective in their decision making, with some arguing homosexuals make the best leaders. Leaders with children were pretty reckless in the past.
No one is equating anything, it's a question of time. Being a "leader" is 18hrs/day job, if you still have time to educate your children on top of that, it's either because you're not doing your job or you're not correctly educating them.