Pretty much every remotely developed country is capitalist. The wealthiest country with a non-capitalist economy is Cuba or Turkmenistan, depending on where you draw the line.
I don’t intend to defend the “socialism bad” argument. There are several countries (many in Europe) that have great outcomes while being about as socialist as left-wing Latin American governments. I think a fairer criticism is some of the Latin American parties have a track record of flawed implementation that caused distrust among a lot of the population.
This has me wondering, do people think the military is 1/3 of the US economy? That would explain a lot of discourse.