Of course but once you have 3 digits inflation, what other way to reduce is there besides cutting the supply of money suddenly in a shock? People won't like it, I didn't like it either but the two other presidents tried various methods such as price controls and that didn't help, on the contrary.
If you have long-lasting inflation, you need some shock to cut it. But reducing the supply of money only does shock, it's keeping it constant over the long term that avoids inflation.
And well, price control never works. This is well known. It's also well known that Argentina's last few presidents were people that wouldn't let patently known and unavoidable facts get in the way of their policies...