> "I write in a gender independent style (unlike your comment!)."
That seems fairly silly considering 95%+ of founders are men. Women founders are an edge case. Whether that's how things should be or not is a question for another day IMHO (Ask women why they don't want to be founders), but acknowledging the fact that 95% of founders are men, isn't being sexist.
I think his point is completely valid - if you have a supportive spouse, you can be 50% involved in baby, or you can be 1% involved in baby. If it's 1% then it won't really impact your success in a startup (Although you'll most likely live to regret it).