No. Just no. George McGovern did not run on the economy and was not interested in the economy. He was a proto-neoliberal. McGovern ran on ending the war in Vietnam, a war Nixon was winding down in 1972. Judith Stein has written on this.https://www.theatlantic.com/ideas/archive/2020/02/bernie-sanders-george-mcgovern/606883/ …
McGovern ran on a platform of social justice, guaranteed minimum income, health care, clean energy, raising the minimum wage, and ending an unpopular foreign war. He also mobilized a movement that was condiserably to the left of his actual platform. All these are valid parallels.