I’ve always been curious whether those “dyslexic-friendly” fonts amount to anything, and this 2022 post I haven’t seen before puts this idea to rest:

But the new fonts—and the odd assortment of paraphernalia that came before them—assume that dyslexia is a visual problem rooted in imprecise letter recognition. That’s a myth, explains Joanne Pierson, a speech-language pathologist at the University of Michigan. “Contrary to popular belief, the core problem in dyslexia is not reversing letters (although it can be an indicator),” she writes. The difficulty lies in identifying the discrete units of sound that make up words and “matching those individual sounds to the letters and combinations of letters in order to read and spell.”

(via Daring Fireball, whom I quoted for the title, via Jens Kutílek, whose fonts I use)