Thanks for the explanation @smooth; appreciate you taking the time. Steemit/Steem seem like interesting experiments, in their own right.
My interest in the SBD peg primarily comes from a commercial interest. It's functionally difficult to use a currency to trade goods and services if it fluctuates wildly.
Quoting from one of my other replies here:
As noted by @timcliff in the post, perhaps other changes can be made in the future to reduce the upward spikes. Even without changes I do think it is possible (though hardly certain) that the price may become more stable over time as the system matures.