I'm guessing this was downvoted for being rude, but I think there is a valid question here. It looks like Zed is putting a lot of work into minimizing the latency between a key being typed and feedback being displayed on a visual interface which is easily parsed by a sighted user.

If a programmer is using audio for feedback, then there is probably be some impedance mismatch by translating a visual interface into an audio description. Shouldn't there be much better audio encoding of the document? There would also be many more wasted cycles pushing around pixels, which the programmer will never see. An editor made specifically for visually impaired programmers, unencumbered by the constraints of a visual representation, would be able to explore the solution space much better than Zed.