The American dollar has absolutely dominated other national currencies recently. I think that crypto's biggest use-case at the moment is that it enables people to easily change their unit of account from a non-US national currency to USD.
The downside is that many stablecoins carry project risk. The recent Terra implosion that caused UST to depeg and plummet to >$0.10 absolutely destroyed the lives of people who were only invested in stablecoins.
I think you're absolutely right, and you've provided a great example of how USD-pegged coins can help combat inflation, but I am very leery of most stablecoins. There are a few that I hold, but they are my personal favorites - I feel confident that they will not depeg.
I guess what I'm trying to say is that there are a lot of popular stablecoins out there that are sketchy. Anyone interested in stablecoins should keep that in mind and do a little bit of research before investing.
Great post, and thanks for sharing your story.