don't know about the background of this, only that it shows a banner under the streams to advertise the new movie - but, I mean they did a "The joy of Painting with Bob Ross" Marathon last year... but in the end, Twitch/Amazon is just a company that wants to make money in the end
I mean, Amazon owns them, it's not surprising Amazon would be able to do something like that. Then they show it on twitch instead of prime because of the chances of a better audience being on twitch. ez.