Not really, unfortunately. Very few customers require good UX with a screen reader, and we certainly can't afford the expenses necessary to research it on our own initiative.

To be honest, I didn't even think about it until now, but since you mentioned it, I'll ask my design team to do a small-ish research and in the future try to build navigation better accessible for people with impaired vision. I'll hardly be a top-notch experience, but at least we'll try to pick the lowest hanging fruit.