No doubt there are many views on dairy. I'll give mine a small piece of low-fat/low salt string cheese weekly. About the size of an index-finger nail.
I believe my vet was advocating yogurt/ice cream as a medium for disguising meds when the alternative is either no dose or partial due to spitting and flicking. A very small amount, just enough to make the mixture palatable. I prefer to not restrain and force-feed oral meds via syringe (w/o needle!) unless necessary.