The other half of the conversation is the functionality provided on Medium. If people want ‘annotations’, they can use things like Hypothes.is, if they want to provide the options to link, they can add fragmentions, while there are many themes that provide similar look and feel. To be honest, I think that Hackeducation.com is one of the cleanest reading experiences.
Although third-party applications make it ‘easy’ to sharecrop, the question is at what cost?
My other concern is what might happen if Flickr were to flop or be sold off? What would happen in that situation?