Dunno, at least not for me. But is it not dubious that literally the one font that everyone has been conditioned to dislike through the power of memes is then magically the one that then must be helpful for dyslexics? Like why not any one of the other terrible fonts that shipped with Windows XP like Papyrus. Feels like magical thinking to me.

Even designing a study to find the "right" font for dyslexics would sit strange with me. I remember not liking to read certain text because of the way they where printed, but this had more to do with me being unfamiliar with the typeset and not necessary its inherent qualities. These days it is much easier for me to pick up new skills because I know so much already, but for someone with a learning disability it is hard to acquire more then one skill at a time. So my advice, pick one font and stick to it.

Actually maybe this is bad advice. Perhaps focus specifically on learning to read many different fonts. I found my education to be very paternalistic and intellectually unstimulating. It is hard having an asymmetric IQ, with the verbal IQ of an average person, combined with the spatial intelligence of a genius and the motor skills of a moron.

I think you can say about dyslexics what I've heard said about autism, that it is not a spectrum but a constellation of different neurological phenomena that are hard to classify on a single axis. Is Pluto a planet with a moon that is bigger than itself or just some random trans Neptunian object we like to obsess about.