Obligatory: the most accessible font is usually a font your readers are already familiar with. This font looks distinctive, and personally I kinda like it, but it's not a magic wand you can wave over a document to make it more accessible.
Was going to ask, wouldn't something like Times New Roman be the most accessible just cause people are used to it? Plus, serifs make the letters more recognizable.
I think sans serif fonts are preferred for most screen reading because it takes effort to perceive the tiny serif details, or just the really thin lines like the horizontal in the 'e', at typical font sizes.
But there are no absolutes so fonts that try to be more legible use some tails and such to make characters distinguishable.