I don't have any disabilities so I don't know if espeak-ng is better on the pure accessibility axis. But given that MacOS tends to be received quite well by the

I don't have any disabilities so I don't know if espeak-ng is better on the pure accessibility axis. But given that MacOS tends to be received quite well by the accessibility crowd & it's definitely a focus from what I observed internally, given that MacOS has much higher realism & naturalness out of the box, I'm going to posit that it's not the linear tradeoff argument you've made & that espeak-ng defaults aren't tuned well out of the box.