Have you ever looked at a chronology of Argentinian history of the 20th century? The Peronists were out of power for far more than they were in power, and even the military governments didn't improve the economy substantially, if at all. Peron was (elected) president from 1946-55, and from '73-74, Isabel until '76. There wasn't another "Peronist" government until NCK in 2003 (and no Menem, from '89 to '99 doesn't count because he disavowed his earlier Peronista ties and governed as a neoliberal). For much of the period between '55 and '73 the party was banned.
Your blaming of Peronism for everything sounds just as unhinged and irrational as the rhetoric you accuse them of. And when you start comparing JDP to mass murderers like Franco and Mussolini (who have more in common with Videla, if anyone), that's just lazy thinking.