Hi! I am so sorry you received comments that were unappreciated. I understand how you feel, and while I did not see the thread or comments you referenced, I am afraid there is no consensus what the 'right' food is for a dog. I also agree there is no reason to be rude or inconsiderate regarding food (or any other subject)...it is very difficult to find the food that 'works' nutritionally and medically for a particular dog and monitarily for its owner. I also am familiar with Fort Hood, having lived in Copperas Cove with a DH stationed at Fort Hood...and, of course, I am familiar with the pay and Commissary options.
The only advice I would offer regarding dog food would be to read labels, research ingredients, and get the cleanest, most nutritionally appropriate food you can reasonably afford. This will save you in the long run since, hopefully, your dog will be healthier...but it is not a guarantee, since there are many factors involved.
Congratulations on getting your Yorkie. I hope you do not judge all who frequent YT due to comments already given. There are many here who are very supportive, and since it is often not properly conveyed in written words what was meant by the writer, heart-felt or emotionally, the possibility exists that some skewing of intent occurred between the brain and the keyboard...on any side of an internet router.
Please do stick around...I only speak for myself, but you may find you are not as disappointed in the future by YT'ers as a whole.
{{{Hugs}}}