Had some time to think about this more. Today's @Flipboard news is substantial and I can't wait for this ActivityPub integration to become widely available, especially for publishers and content creators.
I should write more about this in a blog post, but wanted to plop down some quick thoughts.
As @mike pointed out, it's a break down of the walled garden of content. This hopefully creates greater exposure/promotion of Magazines, and maybe even Storyboards.
https://medium.com/@mmccue/flipboard-begins-to-federate-4a80d6bdc209