I think the problem with your app on Alexa is the interaction model - if your app could push to my Alexa so I can open an article on my phone and then say "Alexa read this article", or use the iOS share menu and share to your app on my Alexa that'd be pretty nice. But I don't see myself saying "Alexa, tell Articulu to read ...." if that's the interaction model it'd force.
Totally agreed with GP. Needing to somehow uniquely identify an article over voice assistant will be painful. However, something like Pocket, where you can push articles/pages into the record and call them back by voice or tag would be cool, especially with the ability to queue articles in a desired order.
