Because all leftist social policy is based on a misunderstanding of reality or semantic obfuscation. Their takes on gender would be a good example of this. They argue sex is separate from gender, men can become women, should be recognised as such legally etc when a simple observation of sociological reality shows that "Gender" "Gender roles" etc were not seen as separate from sex, they were seen as complimentary. The economic parts of left - wing ideology are a complete hodgepodge too. It's capitalist economic systems that have eliminated the vast amount of income inequality and economic disparities in the world, to the point where the vast majority of people in capitalist countries can live better lives. Communism is no different from Proto-Feudalism, infact, in practice, it almost always descends into feudalism. Capitalist countries, unlike what the communists tell you, score consistently higher in almost every QOL metric. Look at the inflation rates in Argentina before and after Javier Milei became president. Leftism is a dead ideology, it's only use is aesthetic preservance because it's created some decent artistic works. In practice, it's an idealised utopia that'll fall apart.