Do you have a version of this graph that shows the situation before the recent HBD spike? I think that would more relevant for assessing how people use Savings feature.
If the temporary #1 use case for HBD is "Korean cryptoindex fund asset" and #2 is "get ready in case peg breaks to the bottom", the green section of the graph is hugely inflated compared to the yellow part.

I am also quite sceptical of a 3-day lock period being a serious liquidity risk. It is quite different from the HP lock period that our minds had to accept as standard.