SMTs will bring more success for the Steem blockchain. Every content creators will get benefit from it outside of Steemit. Every website on the internet will get another opportunity in terms of Monetization. Some of the big website with having good traffics and active users like Medium, reddit, Mashable and Smashing Magazine can integrate SMTs on their website, but I am not sure that they might use it or launch their own Cryptocurrency.
But still if we think, there are possibilities that some of the big websites will use it, due to the popularity of Steem blockchain and Steemit.
The Project of SMTs will increase the number of transactions on the Steem blockchain and the number of transactions will help the Growth of Steem and steem prices.
Thanks @sndbox for the article.