Carter was "ok" but the party pushing him almost caused the DNC to split, and was the begining of a move to the right that lasted generations...

You're comparing Carter to everyone who came after and said he's progressive.

While ignoring the Dem before him is widely recognized as the peak of modern liberalism, the thing before neoliberalism...

Lyndon Johnson's Great Society was aimed at expanding civil rights, public broadcasting, access to health care, aid to education and the arts, urban and rural development, consumer protection, environmentalism, and public services. He sought to create better living conditions for low-income Americans by spearheading the war on poverty. As part of these efforts, Johnson signed the Social Security Amendments of 1965, which resulted in the creation of Medicare and Medicaid. Johnson made the Apollo program a national priority; enacted the Higher Education Act of 1965 which established federally insured student loans; and signed the Immigration and Nationality Act of 1965 which laid the groundwork for U.S. immigration policy today. Johnson's civil rights legacy was shaped by the Civil Rights Act of 1964, the Voting Rights Act of 1965, and the Civil Rights Act of 1968. Due to his domestic agenda, Johnson's presidency marked the peak of modern American liberalism in the 20th century.[2] Johnson's foreign policy prioritized containment of communism, including in the ongoing Vietnam War.

https://en.m.wikipedia.org/wiki/Lyndon_B._Johnson

I'm not saying Carter was a useless piece of shit, I'm saying he's the one that started walking to the right, and the people after him went past the middle.