the AND no longer has that position. the Australian association based their findings on the AND position paper. and there are other associations which specifically do not recommend it during pregnancy and infancy. even the now-expired AND position paper was mostly about the possible dangers.
All major dietician organizations agree that living on a plant based diet can be healthy during any stage of life including infancy, pregnancy, etc
the AND no longer has that position. the Australian association based their findings on the AND position paper. and there are other associations which specifically do not recommend it during pregnancy and infancy. even the now-expired AND position paper was mostly about the possible dangers.
Source? Australian dietician organization has a specific guide for veg/vegans here: https://member.dietitiansaustralia.org.au/Common/Uploaded files/DAA/Resource_Library/2020/VF_AGHE_for_Vegetarians_updated.pdf
https://dietitiansaustralia.org.au/sites/default/files/2022-02/Vegetarian-Nutrition-Role-Statement-2018.2.pdf?hl=en-US
it says it’s based on the now-expired AND position