I too , appreciate your input Mari! My experience of several uk vets is less encouraging. Had a dog with Epi, which was an eye opener on vets lack of knowledge in that aspect.
However what I do realise is that to recommend a certain prescription food will cover vets for insurance purposes. Not all people are as clued up or able to research the web as us. If the vet gives them a safe option, then the pet is safe. Medical knowledge is specialised , and without that , pet owners can make fatal mistakes.