Emotive though this subject is, it's worth remembering that newspaper stories are often not as cut and dried as they appear, especially in local papers where there is less chance of being nationally called out for any errors or misinterpretations (not meaning to offend any journalists here!)
Yes, the negative effects of drinking large quantities of alcohol whilst pregnant are not in question. IF the woman in the article really had only had one drink I do think the landlady was a bit unreasonable to refuse to serve her, however it is her decision as licensee, if she feels someone is putting themselves or others at risk, to do so. Maybe the woman was known previously for going over the top. And yes, since what caused her to get thrown out was drinking someone else's drink after having been refused service, I think the licensee acted well within her rights. She might have lost a few customers, but that's her choice.
But the larger issue is whether we, as a society, should allow women's choices to be curtailed simply because of their child-bearing status? Should an educated, healthy woman be allowed to do something which contravenes the medical suggestion of the moment? I'm not saying heavily pregnant women should be able to make their own minds up about regular binge drinking - but in those circumstances social services would probably intervene anyway. "An odd drink now and then", if that's all it is, has not been proven to have an adverse effect on an unborn baby. But because there is a minority who do not understand the concept of moderation, the guidelines have to say "best not to drink at all".
The peanuts issue was a prime example. The guidelines NEVER said "no pregnant woman should eat peanuts", it was all centred around whether there was a history of allergy in the family, but when I was suffering morning sickness and the only thing I could keep down was chunky peanut butter on toast, quite frankly I figured it was better to eat what I could than not eat at all. And all right, there was no reason for the Snickers craving later on, but if a newsagent had refused to serve me one I'd have been a bit miffed, to say the least. I did, however, get quite a few lectures about eating peanuts whilst pregnant, which I blew off. Was I being unfair to my unborn?
If an obviously pregnant woman orders coffee or Coke, should she be refused service? Given that the most risky time for caffeine consumption is believed to be BEFORE she is obviously pregnant, should all women of childbearing age be refused anything that might, possibly, in some circumstances, pose a small chance of threat to a developing baby? If you can prove you're infertile, can you get exemption certificates?
I'm being deliberately facetious, but the bottom line is that women are, by and large, quite capable of making their own decisions based on their own knowledge and assessment of the risk. As long as she's aware of the facts, she's entitled to take chances if she wants to - it doesn't, on it's own, make her a bad person or an unfit mother.