I mean, an "Autism affects girls, too!" graphic isn't incorrect
but it's, like, the actual message which needs hammering home is "restricting diagnosis to maximally stereotypical white boys with a special interest in trains is malpractise, motherfuckers" and unfortunately the audience which needs to see that one is pretty insulated from having to accept any messaging. Or science. Or decency. Or
For some reason this feature is the one that people hold onto hardcore, one which is so hyper-specific to the North-East area like Boston, Philadelphia, and New York that it makes me scream. The other area of the world early key research in ASD symptoms is of course the United Kingdom, which also has a lot of specifics about their train infrastructure that make an obsessive interaction with Train Schedules more common.
We have asked this question about Train Schedules, Bus Routes, Phone Numbers, Zip Codes, etc for years and years and years. There is nothing useful about this question except in those hyper-specific hyper-fixations, and to this day the term "Hyper-fixation" is now a completely useless unloaded term. People will call an interest a hyper-fixation now, despite often times the interest going surface-deep or just barely a smidge beyond public knowledge.
I've met Train Nerds. Many of them are ASD fellers, but a good number are just fucking stoked on Trains and function perfectly normally outside of their Train related interests. What Train Nerds tend to have in common prior to the era of the internet is that many of them are from those U.S. cities I mentioned, which speaks instead to the Developmental Context of hobbies and their acquisition.
That's without debunk on Extreme Male Brain hypotheses, just the basics of a statistical exposure phenomena where-in a portion of a population would in-fact memorize time tables for train schedules because that's when the fucking train to work happens. It can line up with other ASD symptoms sure, but for some reason the literature is only just now starting to comprehend this idea that ASD's key symptomologies are not merely behavioral, but are starkly associated with developmental abnormalities in psychomotor, sensory processing, and lingual cognition related neurological zones.
But you know, people also don't get that Hyper and Hypo sensitivity are both an axis of symptomology in both ADHD and OCD. You won't read that one in the DSM-5.