He put Argentina into the toilet.
It was probably already shitty enough place to live before he got there but now, they're going backwards, more poverty, all the resources privatised and given away to multinational corporations for nothing, no welfare, no job opportunities and rising unemployment, more gang violence and drugs.
They were slowly making improvements before he got in, it'll take 20 years to repair the economy before normal people in Argentina standard of living comes back up to what it was.