The SBD is not pegged to the US Dollar. They only show for each crypto currency the actual worth in US-Dollars but it also could be shown in Euro for me in Germany. The value of the SBD is stabilizing around 5 Dollars recently and Steemit is climbing up the ladder in the coinmarketcap charts (today on place 25 and before not in the top 30). As steemit is a backed crypto currency its value will not decline as the value of the other worthless crypto currencies is declining. In the end only 3 to 5 cryptos will survive. Bitcoin and SBD will be two of it.