>I am not using JavaScript, except for a minimal installation of MathJax to be able to render equations in blog posts (and I know of no other simple way to accomplish this goal).
I remember MathML support used to be bad. Is it still the case?
Not only is browser MathML support lacking, authoring MathML kind of sucks. Anyone familiar with the basics of LaTeX for mathematical equations (human-readable LaTeX) will prefer to write that and let someone else's code render it (as MathML, as SVG, as a raster image).
I remember MathML support used to be bad. Is it still the case?