I think you're thinking of Steemit rather incorrectly =\ If a blog is type II content, and Steemit is primarily a blog site, you're essentially focusing on something that steemit isn't.
Quite frankly, Steemit can be made to be so much more "Tumblr - Ghetto Edition" but that does seem to be the direction Steemit devs want to take it. Steemit could, however, be turned into a social media platform by integrating video, image galleries, status updates, blogs, etc into a profile.
Take a gander at the typical Oxwall installation for sake of example.
And the reason people don't mind so much about posts being archived on reddit vs being archived on Steemit is because Reddit, you don't get paid out for, but you do on Steemit. If I make a post that's a tutorial or informative in general, and someone finds it months down the road and find it super helpful, it doesn't stop being helpful just because it's older content.