Well, good question, possible answers.
1.Glaad, wants to include trans for market share, not neccesarily for helping that group.
2. Glaad, has fear of the trans community and wants to marginalize us from effective rights solutions we as trans can acquire, sooner than they.
3. Glaad is just ignorant
4. Glaad, has a glimpse of the master plan.
Yes, well it really is inappropriate for the Gay and Lesbian community to aliagn us, with them but than refuse to put qualified trans on the board.... but wait, of cource that is it as trans we are not necessarily gay or lesbian and so like them dreaded bisexuals are never going to be treated fairly by a gay and lesbian organization.... Silly me, the answer was there all the time.