Very interesting, and I hope ( and think ) that the author is right.
It is now 26th of januari 2018 and the price of Steem is now around 6.04 USD, but Market Cap is on 25th place, while bitcoin still nr 1, followed by Ethereum.

I looked it up on marketcap: on januari the 26th of 2017 the price of steem was 0.14 USD.
This means that in one year steem is valued 43 times higher! Or a growth of 4300%!

This is incredible and although the value will have its ups and downs, the fact that there is underlying value in the value of the content that contributers provide, make it much more "valuable than things like bitcoin...

That is why I believe in the platform.
Besides, I find it much more interesting than Facebook and the likes :-)

The content here on Steemit, or Busy.org for that matter, is so varied and diverse; everyone can find things of interest and contribute / discuss, connect with people on their fields of interest.

I allready connected with a lot of interesting people who are publishing about art, design, music in a very respectfull way.
We learn from each other and the world is full with people who like to share their knowledge and expertise and ideas. The whole process of writing / publishing is sometimes difficult but also very rewarding. You can learn a lot from this process itself.

This is rather unique esp. compared to Facebook which is just full of ego oriented "selfies" comming and going....