The psychology of this is extremely complicated. Some clinicians are unboubtedly cold and blunt, some clients are overly sensitive. I think in the long run this article says more about the authors than clinical practice etiquette.
I feel these authors are externalising their own problems. Making everyone else responsible for their feelings. I'm sure being labled into a minoroity sucks, whether it's asthmatic, heamophiliac, arthritic, islamic, catholic, african-american etc. It doesnt really matter because how you respond emotionally to that word or label is your responsibility. If that means a lot of soul searching and therapy to sort out why you react the way you do, then so be it. To expect the world to change is unrealistic..
Chances are that once they come to terms with why they react their self care will also improve.