That SBD doesn't hold the peg almost at all during a price spike is a problem that could use addressing. There will always be price spikes. We shouldn't expect them to break a pegged asset.

That said, this issue started before the price spike, so it is more difficult to characterize the underlying causes.

If it's simply a matter of strong market trust/confidence instead of supply/liquidity, there's not much that can be done about it

I don't agree there. We can create a trillion SBD. It can always be a matter of supply if that's what it takes (though not exclusively that)