Not the thing where Marxist analysis predicts something that’s obviously going to happen, people (libs) don’t believe it and shout you down, then it happens shocked-pikachu

Rather, it’s supposedly how the spouse or partner of an autistic person endures some sort of suffering (usually in the form of emotional neglect) caused by the autistic person, but no one believes them since the autistic person masks around others.

To me it sounds like plain ableism, putting the blame of a bad relationship entirely on the autistic person for not perfectly conforming to the allistic’s expectations. Honestly similar to “autism parents” who complain about their autistic child’s existence and make it entirely about themselves and basically just straight up hate their child.

But I also understand that relationships absolutely can be one sided like that, even between allistics. Especially based on gender, i.e. the trope of the housewife doing everything to take care of the husband who does basically nothing after getting home from work. I can even see it in my parents’ relationship; my dad - who is probably autistic, but also diagnosed with other stuff like bipolar depression - isn’t great, and I strive to not be like him in many ways, although I haven’t had a relationship yet.

That said, I still think on the balance the idea of and intent behind “Cassandra Syndrome” is just ableist.

Here are a couple of (IMO) good write-ups that I found, from the autistic point of view:
https://rationalwiki.org/wiki/Cassandra_affective_deprivation_disorder
http://abnormaldiversity.blogspot.com/2017/08/cassandra-syndrome-and-denial-of.html