The comparator, which is either FIAT or stablecoin, is truly distinct from Bitcoin. You can not have such currency that is comparable, especially the independency.

One thing to note, based on my knowledge, those who are exposed to high inflation rate does not necessarily chooses foreign currencies as their choice, there are many other options such as gold and such. But if we reduce the choice between a FIAT and stablecoin, certainly that if one is able to safely save in a FIAT, they should do this option. Using stablecoin would add unnecessary burden with how to protect its key and most importantly the entity that creates the stablecoin itself.