Basically, LGB caved in when we should have stood firm, knowing that we were not the same as transgendered people but we didn’t.

Here is a good article from Salon, dated 2007, that is entitled:

How did the T get in LGBT?

The 30-year fight for a federal gay civil rights law may fail because activists insist on including rights for transgendered people too. Has gay inclusiveness gone too far too fast?

I have a sense that over the past decade the trans revolution was imposed on the gay community from outside, or at least above, and thus it never stuck with a large number of gays who weren't running national organizations, weren't activists, or weren't living in liberal gay enclaves like San Francisco and New York. Sure, many of the rest of us accepted de facto that transgendered people were members of the community, but only because our leaders kept telling us it was so.

A lot of gays have been scratching their heads for 10 years trying to figure out what they have in common with transsexuals, or at the very least why transgendered people qualify as our siblings rather than our cousins.

It's a fair question, but one we know we dare not ask. It is simply not p.c. in the gay community to question how and why the T got added on to the LGB, let alone ask what I as a gay man have in common with a man who wants to cut off his penis, surgically construct a vagina, and become a woman. I'm not passing judgment, I respect transgendered people and sympathize with their cause, but I simply don't get how I am just as closely related to a transsexual (who is often not gay) as I am to a lesbian (who is).

Is it wrong for me to simply ask why?

https://www.salon.com/2007/10/08/lgbt/