Drew from Genetically Modified Skeptic released this video just a few days ago, explaining why he turned down working with Dawkins and explains also how Dawkins works with religious nutjobs.

Dawkins found the retraction to be unprofessional, and then chose to withdraw from the board of that organization. It seems like it had less to do with a personal opinion about trans people, and more to do with the professional standards of an organization.

I doubt that. Dawkins teamed up with religious fundamentalists to speak out against trans rights multiple times in the past.