[tarboreus]

The reality is that the education you're talking about is never going to happen. By the time you had 80% of devs knowing how to do a11y on JS framework #271, a whole new paradigm would have come in. It's because accessibility is not a priority that accessible defaults, which almost definitionally need to be system- or browser-based, are so important.

If you make a form with HTML and style it with CSS, then you're 85% of the way there with accessibility, and chances are it will be usable if you screw the rest up. With JS, even if you're working from a checklist, you're much more likely to get somethign wrong. And then there are regressions. I kind of believe that you know what you're doing, because the kinds of people that hang out on HN often do. But will your second-generation successor, four years from now, know how to update your work without breaking accessibility? Empirically, based on the low level of accessibility on the web (improving, but still pretty tough going), I'd say "no."