I believe that Steemit will replace Reddit and Quora in the next short-term.

But I see it still need some improvements as the last report of the team about 2018 edits.
I wish to see steemit a multi-function platform not just for discussing topics or answering questions like Reddit and Quora.
If that happened, Steemit will be one of to 20 social platforms around the world may be at the same level as Twitter :)

For Dtube, I see it so promising, but it needs more time to reach the same level of youtube.

Thank you Josh for this interview, I loved it :D