Thanks everyone for your continued responses!
Yes, I do get it and I absolutely accept it. But, none of your explanatory words above are used, when a CDer with either a female avatar, or presenting as such to a wife, says "THIS is who I am". There is no mention of fluctuation, no mention of "sometimes but not always", which leads the onlooking muggle like me to wonder, "Well then. Since they are presenting as women, this must be what they mean when they say it is who they are. A woman. (not a woman sometimes and a man at other times)".
Absolutely! I think it would clear up a lot of misunderstandings both in this forum and in the home between husband and wife, if when presenting as a female a husband said, "This is one aspect of who I am" instead of "This is who I am".
I can see why (some? many?) of our TSs in the past have believed that CDers were TSs in denial, when there was no further explanation to the "this" other than the female presentation, or an account of having presented as a female. :p