Indeed so. For example, Dr. Robert “Tommy” Mitchell, M.D.(USA), in his article Evolution and Medicine, wrote:

Evolutionists have also, over the years, pointed out the many so-called “vestigial organs” in the human body. It was their contention that these many organs were leftovers from millions of years of onward, upward evolutionary processes that no longer had a useful function. It can be argued that this viewpoint actually hindered the advancement of medicine, as many accepted this concept of vestigial organs and expended no effort to seek out possible functions for these organs.

Dr Mitchell gives the example of the thymus gland, pointing out that many children had this gland irradiated needlessly.