It is kind of a big technicality... and on the other hand one that completely doesn't matter and it doesn't affect anything because a sex change isn't even remotely required to change ones gender.
Why is it so important that I believe that someone who goes through a sex change actually alters their sex?
I could even go as far as to say to lie and say that it does... does more harm as it creates a unrealistic fantasy as to what actually occurs. (and as people find out... Sex changes quite often do not fix gender dysphoria. But lets pretend it always does!)
It's a matter of phrasing. By focusing on the idea that one's sex isn't changed, you also undermine the gender transition, because the two by no means are conceptually separated, given that gender primarily arises from sex (after all, they're even named the same, so if you say that sex changes don't
really make you female, well, you might see how you could get taken the wrong way...).
As for the documented unsuccessful uses of sex changes to address dysphoria, that's also an interesting thing, much the same as SSRIs might not really fix depression (having the notable potential side effect of more depression), and when they do, we don't necessarily know that it's actually the SSRI mechanism that fixed it to begin with. It's something that more research should definitely be done on, to either refine the process or find the conceptual flaws that prevent it from working - pushing a technicality, however, is neither of these things. It's deconstructive, the point is.
Well that might be one of the reason why you're a miserable person with no friends.
Now now, the idea is to be
less horrible to your fellow man and woman.