[jt2190]

> … there isn't one single right answer to improve accessibility.

This is very true. Like any optimization, there is a point at which improving things for one community makes things worse for others. An example most of us are familiar with are the trade offs between mobile UI and desktop UI: You can make your UI adequately work on both, but in order to give both an optimal experience things start to get quite complex. I’ve seen developers tie themselves into knots trying to be all things to all people here. Accessibility is harder in a sense because able-bodied devs often don’t have any instinct for when they’re crossing the line from “good enough” to “overkill”.

The 80% rule for accessibility is really just “Make your site keyboard accessible”. While there will still be some issues for some users, it’s a clear enough goal that it can break a dev out of “analysis paralysis” and just get moving on something, and the benefit is huge for the vast majority.