There comes a point where I have to disagree with a few things.
First of all, self-diagnosis IS equally valid as official diagnoses, because everyone has a struggle. Of course, of the entire population diagnosed with autism, no experience is the exact same. And misdiagnoses may also exist because even if the diagnosis is incorrect, it can also mean that an individual is possibly struggling with another disability that’s brushed under the rug.
Second, to undermine self-diagnosis and deem it as “not truly a diagnosis” is to dismiss the experiences of working class individuals and women and gender non-binaries who may also have possibility of having the disability. Some people simply cannot afford enough money for medical treatment, while women’s symptoms of autism are much different from men’s because they’re expected to mask their behavior in order to fit in to the nt society. It should also be noted that if not, women, especially women of color who freely express themselves are unfairly judged as hysterical and moody (i.e. the angry black woman stereotype). This stigma is the main reason why economically privileged cisgender white men are more likely to receive an official diagnosis, while outsiders are either shut out or have to work much harder to achieve one.
Third, judging someone for self-diagnosing is unfair in itself. While I do agree that the phrase “we’re all a little autistic” is inaccurate, it should also be noted that viewing a person as not struggling at all for appearing to be “normal” is also wrong. No struggle is the same. No version of “normal” is the same. I’m guilty of scoffing at people for supposedly making a big deal out of something I lack the understanding of, but a lot of times to them, their struggles are valid regardless.
So in summary, to assume that self-diagnosis is not valid but selfish and trendy is to engage in negative generalizations, prejudice, and isolation.
I hope I haven’t offended you or anything, as this is only my opinion.