Complex sentence: While some feel that formal diagnosis helps to destigmatize transsexualism, others feel that it only adds stigma, essentially feeling that such a diagnosis is equivalent to saying something really is wrong with transsexual people.
Split into simpler sentences: While some feel that formal diagnosis helps to destigmatize transsexualism, others feel that it only adds stigma. They contend that such a diagnosis is equivalent to saying something is wrong with transsexual people.