I'm... Not in that target market. I don't understand stories. At all. On any platform. I don't see how it's different than just posting and anyone that follows you will see it if they are scrolling, since there is no algorithm here. That stuff works when someone else curated the feed and they need to artificially create division in content to generate revenue.
Also, more video exponentially raises relay costs, and that is a concern. I don't think it is fair to not cover the costs of video (or even photo) data, at least in the long term. This will need to be addressed for sustainability.