That point about how sensory processing issues can affect your health is so on point, I had no idea how much of my general anxiety was caused just by the world being too loud and bright. Earplugs and sunglasses worked instantly where 5 different medications failed to do anything.
If you already have an ADHD diagnosis, there probably is no point seeking an autism diagnosis. Being that there’s no medical treatment, and what disability protections there are would be covered by the ADHD diagnosis, I suspect you’d be best off trying coping techniques on your own. Which is mercifully quite easy to do.
The biggest game-changer for me was considering that I might actually have sensory sensitivities. I always assumed I didn’t have many, if any, but it turns out a huge chunk of my day-to-day anxiety was due to light and sound overstimulation.
Given the context of the article, the alternative suggestion isn’t “set up your own server” but “use software that doesn’t require a server”, which sidesteps most of that list.