Alternative:
With Dolar App’s Premium feature, which costs $6 per month, you’ll receive a virtual debit card issued abroad. This card allows you to make purchases without incurring any additional tax. You can deposit pesos, convert them to USDc at the Blue Dollar rate, and spend using the card.
With my Banco Francés account, I don't have to pay the 30% as long as I have dollars in my dollar account to pay the USD charges on my card. I know that doesn't apply to everyone, but at least for some of us it's a help.