I can't believe a topic on the despicable treatment of a transsexual person by those who are supposed to serve and protect has descended into this, something completely irrelevant... But as I can't just leave absurd claims such as these unanswered ill bite...
That's quite the assumption. You contend that the self-depreciative behaviour is caused by the attraction to their own gender and not the awful social conditions and legal discrimination they are constantly exposed to?that has been linked to substance abuse, suicide, depression and other self-destructive behavior.
Some gay men are perhaps more image conscious because they seek the attention of men, who I believe tend to judge more by looks (both gay and straight men) - which would explain why women are far more as you would say "narcissistic".Homosexuals are also prone to extreme narcisism, which would explain why they are constantly seeking attention by behaving inappropriately.
Lesbians on the other hand in my experiences are less image conscious than straight women, and more similar to straight men in that regard - because women by and large aren't as judgemental IMO.
These are of course just my opinions based on personal experience but I believe they explain this kind of behaviour. Gay men aren't inherently narcissistic, it's just a learned behaviour based on social expectations and "laws of attraction".