Coding fonts have essentially the same goal: make similar looking characters different: 1liI|, 0O, etc... Code naturally strains our visual acuity: we want to see as much as possible, it means that we may use a smaller font size than we would find comfortable reading text with. Single letter, punctuation, etc... can be really important, in regular text, you can understand even if you can't read all the characters. So a hyperlegible font can help coders, even those with good vision, and many coding fonts already have "hyperlegible" features.