8 points
The onus would be on the left-wing parties to deliver actual progress for people, but that’s not a problem with FPTP or PR: both systems have problems with neoliberal rot, where left- and centre-left parties forget they need to do things for citizens and not billionaires, and their progressivism devolves into green- and rainbow-washing.
The right has the same issue, only when they fail to deliver for citizens, they just scapegoat brown/Jewish/queer/whatever folk and start with progroms.