Well.......I culture Jarro, Ethical Nutrients acidophilus and bifidorum, and now, my latest friend, Primadophilus L. Reuteri, so I know they've got living bacteria.
Also, I know that these bacteria are lactobacillus and Bifidobacterium because they culture in milk and produce lactic acid.
The point of these bacteria is that they are antagonistic to "bad" bacteria so that in the culturing process only the good survive.
I do not think that any of the above are snake oil. The problem is that infants should not have dairy, but many desperately need probiotic supplementation.
My son needed probiotic supplementation and until we could give him yogurt he got the powder with his breastmilk--- right when he was nursing.
It would be great if there had been some names named in the linked info-- let the sinners be punished in the marketplace, but....
...as usual it's on the "fear" part that makes it ....not the important info. This isn't like Mercola's usual info... oh well.