Of course, in terms of accessibility, there are any number of reasons why someone might prefer to read content in any number of typefaces. Certain typefaces are better for folks with dyslexia. Others may be better for certain folks with ADHD. People with low vision may just prefer a larger typeface.
We have these amazing machines we’ve invented that can display the same text in any number of different ways. At this point, it seems ridiculous to need to mandate a specific typeface for electronic usage. Sure, pick a well-regarded default, but if we want to mandate something, it should be that software provides tools to allow users to adjust textual elements of documents they are reading to suit their own needs.