As someone else pointed out, the article takes into account the unofficial or free market exchange rate.
In Argentina we got an official rate established by the government (the one your screenshot shows) where the amount you can exchange is limited.
And then we got the unofficial "blue" rate, which price is determined by the market and the one the article talks about.
When Milei assumes on Dec 10, he devaluates the official rate from around 360 USD/ARS to 820 USD/ARS, to get the official rate closer to the market rate.
From then the government continues to gradually devaluate the official rate to converge with the market one (that's the slope you see).
Before Milei assumed the market rate was 950. The market rate peaked at around 1100 on December, then decreased to around 1000 in the end of January and it's been relatively stable since.
It also attracts users. Using fad "tech" terminology makes them feel superior than the rest. They think "Oh I'm a tech expert because I use an AI toaster".
Another good example are "gaming" web browsers. Some people actually think they're better (beyond the looks).
This is a basic marketing strategy. It actually works (just for selling nonsense, of course).