I had to google around a bit to figure this out, too - I think it's more that in the same way autistic people often have trouble empathizing with others, neurot

I had to google around a bit to figure this out, too - I think it's more that in the same way autistic people often have trouble empathizing with others, neurotypical folks have trouble empathizing with them. That's the "double" part - recognizing it's a two-way street rather than just a deficiency/obligation of the autistic individual.