I created a browser plugin that became pretty popular among readers with dyslexia, and we got a lot of requests for OD support. We added it and some people like it. My theory is that this relates partly to the increased kerning and the weight of the font (which makes a particularly big difference in combination with the color-based tech we use, since it makes the color more visible that way).
I have seen that some dyslexia fonts don't seem to have an advantage from a population level, but that doesn't mean it isn't useful for some people. Unless there's evidence that people who think it's useful are actually being misled by their perception, I'd say it's not a bad idea to let people know it exists.
I have seen that some dyslexia fonts don't seem to have an advantage from a population level, but that doesn't mean it isn't useful for some people. Unless there's evidence that people who think it's useful are actually being misled by their perception, I'd say it's not a bad idea to let people know it exists.