Well thanks for sharing your opinion. The bacteria in the culture is exactly why I buy it.There is absolutely no scientific evidence or any other type of evidence for that matter that Apple Cider Vinegar is any help to your chickens. However there is a lot of evidence that ACV keeps the makers of ACV in the chips. Since is likely the only one maker of ACV that has traces of MOTHER in it I strongly suspect that those are the folks who are scamming you. I will sat this, if there were a big old gob of "MOTHER" floating around in the next bottle of ACV that you purchase that 99% of the people who purchased it would go back to their grocery store and demand a refund.
Vinegar is not made by or from the mother. Vinegar is produced when an alcoholic beverage like red, white, or rice wine, or else white distilled spirits, and/or fermented malt liquor is exposed to oxygen.
10,000 gallons of 30 proof or 15% apple flavored alcohol will produce 30,000 gallons of ACV with an acid content of 5% which is what you find in the store. The mother in vinegar is an indication that the wine in the cast or barrel was infected by a bacteria culture while it was aging.