[lkey]

I have worked in this space, and I think at present this benefit is and will remain primarily aspirational. Here's MathJax in action: https://www.youtube.com/watch?v=6GSgTjorewQ

It's semi-respectable for a computer analysis, but notice that the creator of this video is using TeX to enter the math. You now don't have to write a caption when you paste some math, automated a11y semi-compliance, but does this mean you stop vetting your site with a screen reader? The answer should be no, but I get a feeling that many developers will check the box and move on (see also: "accessibility overlays").

Now, let's turn the situation around, you are blind, you have heard and understood a complex equation, you must respond by writing a response to that equation. How do you do it? Does MathML help you? The markup, generated from TeX, that can be read aloud by a computer, is still fundamentally read only. The most tech savvy of the visually impaired I've met learned to program and use python or something to do their math. It beats the hell out of handwriting xml or using a very restrictive mathML wysiwyg editor with a screen reader.

Do I think MathML is a pure negative? No, but it's not even close to a silver bullet, and using potential a11y benefits to shield its flaws doesn't sit right with me.