The vast vast majority of women adapt their behavior to pregnancy and do the best they can to look after themselves and the fetus they are supporting.
Women who drink alcohol to the point of giving birth to a baby with FAS, are women with problems. And those problems have a source - most likely society; poverty, lack of education and support, childhood issues, DV, etc. And alcohol is legal, readily available, relatively cheap, and a good tax earner so it is hardly surprising that people with problems abuse it. To criminalize individual women for societal problems is misogyny. And what about the fathers of these children? Are they to be criminalized too? Children have two parents - surely it would need to be a crime for a man to have PIV sex with a woman who drinks heavily? What was he thinking potentially impregnating a woman who has a problem with alcohol? Where is his responsibility in all this?
Much as we may all see the utter injustice for a child living with the consequences of FAS, we cannot award all women of child bearing age the status of incubators. This is an erosion of hard won rights, and open to abuse by those who wish to control and subjugate girls and women via our reproductive rights.
A case like this has the potential to change the legal status and rights of all post pubescent girls and women even though only a very small number abuse alcohol during pregnancy (and the solution to that is not to criminalize).
Attempts to subordinate girls and women often ride on the back of 'but we must think of the children' rhetoric.
OK, so if we are thinking of the children then hold the fathers responsible too for not stopping the mother from drinking or for not being around to stop her, or not getting her help. Or for getting her pregnant in the first place. Yeah, let's prosecute men who can't refrain from putting their penises in women with substance abuse issues...