Neoliberal types definitely called Bernie Sanders and Elizabeth Warren “populist”. Trying to equate it with rightwing demagoguery seems like it’s a deliberate poisoning of the term by people who are aligned with the very status quo power structure that populism attacks. In a choice between the status quo establishment and racist rightwing populism, of course the status quo is better, but the rightwing populism is a problem exactly because the establishment is so distrusted for their lack of responsiveness to people’s needs.