Well,
Argentina doesn't really care about these "problems"; it's a large expanse of dirt and rocks, and what people do on top of that dirt and those rocks only affects it minimally. They are born, live, suffer, and die, but Argentina endures.
Some of the people do have these problems, but they aren't the ones who have power.
Rich people in Argentina already have most of their money in offshore bank accounts, so these "problems" aren't problems for them†; they may even benefit from them; for example, because they can buy bigger houses and pay their servants less, and things like the rigged currency system give a lot of tools to the ruling party to reward their supporters with. When the official exchange rate is 30% below the real rate, for example, an import license is virtually a license to print money.
So, I think that providing workarounds to the people who need them, cryptocurrencies probably not only ameliorate the most immediate and pressing concerns of poor parts of the population like Venezuelan immigrants, but probably also adjust the power balance in a more liberal and democratic direction. This will improve the chance of those concerns being ameliorated by public policy over the next decades as well. But it's hard to tell what will really happen. The potential disaster scenario is that, by making most taxation impossible, cryptocurrencies destroy the modern welfare state without providing anything to replace it. So the public hospitals close, the enormous police force starts to support itself by extracting tribute, and the infrastructure decays. Pretty similar to what's happened in the US over the last 50 years, in fact, only more so.
However, at this point I think the modern welfare state is already doing a good enough job of destroying itself without any significant help from cryptocurrencies—as evidence, I can point to Maduro, Macri, Bolsonaro, Trump, and Brexit, and metonymically to the social changes they betoken. So at this point I'm more worried about cushioning the collapse than preventing it.
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† That isn't the way I see it, because I've seen how rich people in more egalitarian societies have better lives than rich people in Argentina, but it's by and large how powerful people in Argentina see it, and that's what counts when we're trying to predict the political effects of events.