To expand on this further, anxiety itself isn't a bad thing, as long as it has a good reason and is in a reasonable amount. People with an anxiety disorder fee

To expand on this further, anxiety itself isn't a bad thing, as long as it has a good reason and is in a reasonable amount. People with an anxiety disorder feel far too much anxiety to the point is harms them. An autistic person who experiences anxiety about a social situation isn't experiencing extra anxiety because they experience too much anxiety compared to the average person, but because their relationship with social situations, due to their autism, has given them valid reasons for having more anxiety than the average person. Their anxiety is valid, thus fixing it by trying to treat it as stemming from a source giving them too much anxiety is fixing the symptom instead of the problem. It's the difference between someone with arachnophobia fearing a toy spider like it was a real danger and someone who is susceptible to black widow poisoning fearing a black widow because it is a greater danger to them.