No, old-fashioned is not a code word for that specific test. it was the best word I could come with for a more traditional mindset vet.
Some vets agree with you and consider it unethical. Many other vets disagree.
Haven't read these all yet, but should note:
Conclusions and Clinical Relevance—Because earlyage gonadectomy appears to offer more benefits than risks for male dogs, animal shelters can safely gonadectomize male dogs at a young age and veterinary practitioners should consider recommending routine gonadectomy for client-owned male dogs before the traditional age of 6 to 8 months. For female dogs, however, increased urinary incontinence suggests that delaying gonadectomy until at least 3 months of age may be beneficial. ( J Am Vet Med Assoc 2004; 224:380–387) (http://avmajournals.avma.org/doi/abs/10.2460/javma.2004.224....)
As to your dog, assuming it's adult what does early age neutering have to do with the situation?
Sounds like you're getting some heat from others about your decision to not neuter an adult male dog. That's a different debate that has nothing to do with neutering dogs at a younger age.