I had a chance to watch the show and I personally didn't learn anything new : binge drinking during pregnancy is bad.
And if mice drink alcohol at certain points during their gestation they get weird looking baby mice.
I understand that the safest choice in pregnancy is 0 alcohol but to me the guidelines is there because moderation can't be easily measured. Depends on the type of alcohol, depends if you are having food, depends how your body process alcohol etc.
But I'll be honest, if I'm pregnant again I'll probably have wine in moderation (which to me is special occasions - a few sips, so not even 1 standard drink).