For the sake of clarification of my own answer - Steem is not a blogging platform. Steemit is a blogging platform built on top of the Steem blockchain. Other platforms and Dapps like musing.io, Dlive, Dtube are the same way

Coming to the question at hand - Yes, I do believe that Steemit is still very much a blogging platform. On the other hand I also think that other Dapps and platforms like musing.io, Dtube, etc. will sooner or later  take over Steemit. This means that when Steem goes truly global, it would be because of the emerging Dapps. I also think that Steemit will always be there, serving as the backbone that brings all the dapps together.

My perspective about quality posts ave changed over time. Now I believe that it is not just about quality but rather building community relationships through good content. Earlier when I came to the Steemit platform I though that creating excellent content is paramount for success. Then I realized that no matter the greatness of the content I create, I would always find something better on the internet. Same went for the other posts on Steemit as well. Gradually I realized that I would much rather have friends here, rather than 'colleagues' who create good content.

I am here to be a part of this community by creating interaction and engagement through decent content. I am not just about quality content anymore. I am about quality engagement and having a good time doing it.