This is like saying, 'Eating chocolate has links to obesity'
So it's probably a good idea to give up chocolate, even if the risk is tiny. After all, you don't want to take ANY risk with your baby.
Or 'One theorist supposed (although no evidence shows) that eating peanuts in pregnancy might be linked to peanut allergy in later life'
Or 'Oh, well I know that eggs have salmonella and maybe there's a salmonella strain that is hard to kill with cooking so best to avoid them altogether'
Just saying something might be risky doesn't automatically create a risk that you have to avoid. That possibility has to be backed up with evidence. Where's the evidence that moderate drinking (not excess, because anything from paracetamol to water is dangerous in excess) is harmful?
There is actually some proven benefit to moderate drinking - reducing stress for example. And Mukamal's Havard study that moderate drinking reduces heart disease.
Where are the documented risks? Just saying 'It might be risky' isn't good enough. I could say that 'Eating chocolate might be risky' but that doesn't make it so.