@Mr. Barley No, they don't require you to prove economic solvency for the TEMPORARY residence visa.
Caleb is not a lawyer, he is a Youtuber. Having said that, in one of his videos, Caleb mentions the $5000 deposit required for the permanent visa (in order for one to prove economic solvency). Nevertheless, if you own a house, or have a college degree, you are able to provide one of those documents (property title or university title) to immigration as proof of economic solvency.
Caleb is the one that calls Paraguay a second-world country. I don't even believe that such definition of a country exists. I live here, it's a third world country.