fyi airflow 2.0 ships in the next few weeks, we're made a lot of improvements https://www.youtube.com/playlist?list=PLCi-q9vYo4x-PESoBcXN0...
Consuming video instead of text assumes that (1) I can hear and (2) I have the time to sit and listen at your speaking pace and (3) I'm in a place where I can sit with the audio turned up (4) I really want to expend the extra bandwidth for your video.
This trend towards posting video content instead of, rather than along-side, written content is pretty anti-accessbility.