If a picture is usually worth 1000 words, the pictures in this are on a 99.6% discount. What the actual...?
It's a conference workshop; these are the slides from the workshop, and the words are a dictation from the delivery.
That seems like a leaky implementation detail to me, for a published piece.
You should learn to be grateful for what other people do on their own time and demand nothing from you for you to benefit from it.