I think what they're saying is, you can quickly understand the contents of a file by having it summarized for you audibly. Versus having each token read out to you. Then you can locate the part that you're trying to program faster.
Programming while biking with ai is like relying on a really buggy early stage auto-drive ai system to take you places down winding, slippery roads while you sleep at the wheel. It might get you there most of the time, but I’d might bend you around a tree too