They use it for USDC, which is much better than buying dollars on the black market.
Same as companies using offshore bank accounts for the same purpose, or paying out cash in envelopes.
People getting paid in USDC of course still need to convert a large amount of it into local cash/cash-equivalent because they still have to pay rent, pay for food etc.
So, "people in countries with high inflation"... is immediately reduced to just "freelancers".
I struggle to imagine how freelancers were paid before the advent of crypto.