It is unfortunate that the effort spent to accommodate screen readers is easy to see as less rewarding than the effort invested into all of the other users... Truthfully, it seems like the only really good solution would be to make screen readers much better at understanding the content than to make the content much better at being understood by screen readers. Pool the expertise where the need is. This kind of thing is why I feel that good AI is so important. We can make information far more accessible, especially when you consider that the AI doesn't actually have eyes either.