does things like the open dyslexic[1] font actually help?
1: opendyslexic.org
1: opendyslexic.org
I'd say having a large line spacing, an unjustified text layout, and a darker/lower-contrast[2], all help more than the font choice itself, but any tiny optimization is helpful.
[0] as a former graphic designer, it actually took me a while to get comfortable with the idea that I found Comic Sans useful for anything, lol