It's a cool example and I guess there are or will be very convenient apps that will stream the last X min of screen recording and offer help with what you see.
But it just hurts my programmer soul that it is somehow more effective to record an app, that first renders (semi-)structured text into pixels, then record those millions of pixels into a video, send that over the network to a cloud and run it through a neural network with billions of parameters, than it is to access the 1 kilobyte of text that's already loaded into the memory and process locally.
And yes there are workflows to do that as demonstrated by other comments, but it's a lot of effort that will be constantly thwarted by apps changing their data-structures or obfuscating whatever structure they have or just because software is so layered and complicated that it's hard to get to the data.