Personally, I have increased time and interactions in Medium over the last three months at the expense of giving up time spent on Facebook and reduced time with Twitter. The result for me at least is very rewarding. Medium has now grown into well rounded space for discussions and sharing of innovative and insightful ideas. A great place to share thoughts. Plus the long form and ability to include images and media allows for excellent site for meditation on key issues in a relaxed, not cramped space. There is no restriction on who gets to view your post and that adds to the richness. Each response gets its own post which is a bonus.
I find Medium a great place to write and read your thoughts.