I'm going to be very real here for a minute and some people might not like it. However.
I see actually quite a lot of transmascs who are NOT MEN specifically, consistently come into the tag to try to explain to us that transandrophobia doesn't exist etc etc etc.
And, here's the thing: if you're a transmasculine person who is constantly being regendered and misgendered and having femininity pushed onto you, because you are also specifically not a trans man, you aren't likely going to understand what it's like to be vilified for your identity as a transgender man specifically. Unless you're fully transitioning in all the same ways binary trans men are, it's obvious that you are not going to see the ways that people use manhood & masculinity against us in tandem with transphobia, sexism, cissexism, intersexism, etc etc etc, in the way transandrophobia specifically talks about.
I understand there is a lot of overlap in experiences between these two groups, and I personally toe the line between transmasculine person and transgender man constantly, as someone who outwardly presents as a passing binary man, who used to identify as such, but now I identify as a genderqueer transmasculine person for various personal reasons of my own gender journey.
But still. It's very clear to me that there are some experiences, which are specifically described by transandrophobia, that a lot of transmasculine people do not or have not yet encountered, and it's obvious when these people discount transandrophobia theory with their personal experiences and explanation of what "the real transmasculine oppression" is, and it all very pointedly omits the types of experiences when trans men and transmasculine people are targeted for their masculinity/manhood.
There is the other end of this spectrum too, which is super privileged hyper passing binary trans men. But that's a different post with different reasoning (being that they're so privileged in other areas they've actually just not experienced more than garden variety transphobia, if that, so they don't think people with other types of experiences exist).