I believe they’re referring to an alternative font, Atkinson hyperlegible. The person in the image is using (I believe) Open Dyslexic, and I think the person you’re replying to is suggesting Atkinson hyperlegible as an alternative for anyone who has tried Open Dyslexic
If the OOP falls here one day, I recommend Atkinson Hyperglide Font which was made with the same goals!
What’s Atkinson? Google’s not giving me anything relevant.
I believe they’re referring to an alternative font, Atkinson hyperlegible. The person in the image is using (I believe) Open Dyslexic, and I think the person you’re replying to is suggesting Atkinson hyperlegible as an alternative for anyone who has tried Open Dyslexic