So you’re looking at a criticism of liberalism, from the left of liberalism. Namely the socialist left, I am assuming. Socialists can be very critical of liberals, as liberalism is a part of the establishment, and has a long history of caving to right wing framing of issues (since the right wing is also (largely) liberalism, albeit “classical liberal.” In this case critical of the “its not practical” preconception that gives ground (literally) to the perpetuators of this genocide.