Definitely makes it clear that they think of intersex people as some sort of mythological hermaphrodite fantasy, instead of y'know, people with (sometimes very severe) birth defects.
I feel like these people gloss over the health complications that occur with DSDs that would debunk their gender claims. You aren't born with a DSD where everything is all hunky-dory. If that was the case, it wouldn't be a disorder.
Beyond that I've never seen intersex people using their condition to justify letting them choose their sex for paperwork, restrooms, etc., that all comes from troons without DSDs. They understand they are wo/men and their chromosomes/genitals are the exception that proves the rule more than anything else.
Some of those DSD-havers absolutely hate troons, and get banned from places like Tumblr for talking about how the appropriation affects them. I remember one on Tumblr called notyourintersexpawn who was very critical of troons using her condition as an excuse; she had CAH, I think.
There was a guy on twitter who went by "Living with XXY" who had Klinefelters syndrome who constantly talked shit about trannies until he was run off the site. Part of it though is that these conditions are very rare, so it was easy for troons to colonise their spaces because there weren't that many people in DSD spaces to begin with.
It's also very easy to lie about having a DSD. The board's own Stephanie occasionally claims she has one (or at least she used to). The average person thinks that intersex means hermaphrodite, so when a trans person claims that they're intersex, it just sounds right in line with the trans claim.
Richard Dawkins (who has a reputation for being cringe on twitter etc but no one denies he is an excellent scientist) wrote an article patiently explaining that there are only two sexes. The same publication ran a response to it that even troon supporters begrudgingly admitted was more philosophy than science iirc. New statesman is pretty lib and they were scrambling for a tra response and that was the best they could do.
Why doesn't any TRA quote any psychologist or neurologist about trans brains instead of trying desperately to argue that sex is more complicated? I mentioned before that my friend defended trans people against me and I really wanted to know what his true thoughts were. It turns out he agrees that there are only 2 sexes. However, he made the claim that the concept of a gender identity is fact and backed by psychology and neurological research. If this is true then why hasn't any expert in these fields given Dawkins a paper on it? Dawkins was always someone who claimed to follow the science and yet not one highly educated neurologist or psychologist tried to show him the evidence on this? Why?
Lolbetarian youtuber Mentiswave did a mostly pretty good video (he takes the time to take swipes at lefty youtubers he doesn't like, but the overall points he is making are good even if you disagree on the exact details of what he is saying) on flat earthers and how they use sophistry to sell a ridiculous belief system.
"Brain Sex" doesn't explain why they feel the need to perform sexist stereotypes. Not unless you think there is some sort of innate neurological reason why women like dresses, high heels and makeup. Nor does it explain why they have such a pathological need to include themselves in womens spaces where they are unwanted. If anything their "female brains" should help them understand how scary it is to have male bodied people in your intimate spaces. The associations of these things with womenhood is learned behavior, and we can conclude from the fact that troons place these things in such a central part of their identity that their identity is learned behavior too. Which is why you get cases like this where troons "forget" that they are troons after developing dementia:
