Ugh. This is abysmal.

Autistic people are just as likely to be cranks as anyone else. Perhaps even moreso because the degree of focus it usually requires in order to become a crank is not that common in the allistic population whereas autistic people are much more inclined towards hyperfixations and, thus, they are more likely to become a crank due to this ability to sustain their focus on a singular subject of interest.

We're just as susceptible to the Dunning-Kruger effect as anyone else.

Just like how clumsily hammering away at the keys of a piano for 10,000 hours will not turn me into a concert pianist, so too is 10,000 hours of hyperfocus on a subject insufficient to turn me into an expert on it. With training and guidance, or in less common circumstances with a keen focus on self-teaching, devoting that amount of time can turn someone into an expert (which is why autistic people tend to be more likely to be a wealth of knowledge in their interests) but unless you've taken account of your biases and for the fact that information needs to be viewed with healthy skepticism and a critical eye then you probably aren't going to end up an expert in a subject, you will likely just end up being a very proficient crank.