Most support groups operate under the principle of "what is said here, stays here." In that regard Lisa's recommendation is absolutely NOT a good one.
You are making a presumption from some things you see about the person and hear them say that they are an addict, or heavy user. As tekla said, in this grouping that is not an unusual occurrence.
I've been in merely two support groups: one was TG and the other, through the services of a private practice, was TS only, men (a few) and women (most.) Some people did talk about their drug use, for some it was current and for some it was being treated through AA, which also has some problems for many people who abuse substances. I respect those who've changed their lives through AA, but that direction isn't for everyone and for some does more harm than good.
(And no, that doesn't mean those who are not into it are "in denial." Just that the nuances of their usage: sexual abuse, mental illness, transsexuality or ->-bleeped-<-, to name a few, are not comfortably dealt with in the majority of AA mtgs by the other participants. Some groups, for instance, totally reject gender-identity, just like many other cisgendered people they cannot get their minds around it. "Gay" AA groups very often can be very understanding about sexual-orientation and it's difficulties with substance use, but are not so open to transgendered people, to include "masculine" women and "femmie" men. At many meetings I've attended when something like any of those topics gets brought up there have been rather forceful recommendations to "take it elsewhere, that has nothing to do with your drinking. It's just another excuse." )
So, the world is filled with a range of people who try ranges of coping mechanisms to alleviate their pain. One size, whether in transsexuality, ->-bleeped-<- or human being does not fit all!
Given both of the support groups I attended when I became uncomfortable with both, I quit going. That was a very good solution, seems like to me. I was the one who was uncomfortable or felt like I was not being helped by those groups. Rather than demanding that they change to suit me, I changed to suit my own desire and feelings. That's another pretty fair rule-of-thumb, imo. It's my problem when I feel uncomfortable with someone, not theirs. I'm the one that needs to make the changes if I am going to remain in that group.
Nichole