
Except it’s not a no true Scotsman fallacy, part of being a leftist is a materialist way of thinking that recognizes phenomena like racism, sexism, homophobia, etc as distractions from material issues. This is why leftists support causes like racial justice, empowerment of women, LGBT rights, etc.
“leftism” isn’t that homogeneous. there is common ground on labor and economics usually. but like, historic leftist movements have not been uniformly progressive on social issues, and even modern global leftist movements aren’t always socially progressive. And ofc there is individual variation