I just did some research on this- see below. It's been a while since I looked at the details (I'm adding to my previous response). It looks like his theory (and it's just a theory - theories can be useful even if flawed), has some useful components and some that are not correct Here's what I'm culling out of this:

1) Some trans women are autogynephelic. Yes absolutely. The operative term being SOME.

2) He claimed the REST OF THEM are androphlic, primary attracted to men. This is definitely NOT correct, because even through some who are not autogynephlic are attracted to men, certainly NOT all of them. (To think so is just absurd)

So did his autogyneplic theory focus on #1 or BOTH #1 and #2. Not clear, it depends on how somebody uses the term. But like all uses of language, much of the reaction and interpretation comes down to people's intention. If some people want to deny that #1 exists, and they HATE them for existing, and DENY that they are trans, then they are going to CHOSE TO demonize anybody who makes any reference whatsoever to this term even if components of it are extremely useful to some people and even help save their lives - which some people don't care about because they probably wish such trans women were dead. I know it's hard being trans, and it was easier for me than for others because I'm OK living as a man sometimes, but that's not a reason to demonize people like me.

Here is a summary I pulled:

=====================

No, Dr. Ray Blanchard did not claim that autogynephilia is the cause of all transgender women to be transgender. Blanchard's theory of autogynephilia, developed in the 1980s, proposes that there are two main groups of transgender women: one group experiences gender dysphoria primarily because they are attracted to men (whom he termed "androphilic"), while the other group, whom he called "autogynephilic," are primarily attracted to the idea of themselves as women, often experiencing sexual arousal from imagining themselves as female.

Blanchard theorized that autogynephilia could be a motivating factor for some transgender women, but he did not suggest that all transgender women experience autogynephilia. His classification has been highly controversial within both the scientific community and LGBTQ+ advocacy groups, with many transgender individuals and researchers challenging the validity of his dichotomy, arguing that it does not adequately represent the diversity of transgender experiences. Some studies and personal testimonies indicate that many transgender women do not fit into Blanchard’s categories, while others see gender identity as a complex, multi-faceted aspect of human experience not reducible to sexuality alone.