He said it was 5% for mothers that have 14 drinks per week or more. It will be much less (if not zero) for someone who has 2-3 drinks a week, which is his point.
I'm not informed on this topic but I'd like to point out that "14 drinks per week" is "two glasses of wine per day", which sounds like a lot less. You're not getting smashed or even buzzed on a couple of glasses of wine with dinner.
>"The government advises that people should not regularly drink more than the daily unit guidelines of [...] and 2-3 units of alcohol for women (equivalent to a 13% ABV 175 ml glass of wine). ‘Regularly’ means drinking every day or most days of the week."
[175ml is about ¾ cup (USA) and the units above are about equivalent to a single pint of 4% beer]
FWIW If I have 2 glasses of wine I'll be "buzzed" because I don't drink every day. Take a month off from drinking, try two normal glasses (ie not pub measures) and you'll notice.