ls this REALLY the left's Reason for Supporting Social Liberalism??
Can any orthadox Marxists or socialists way into whethher or not this is legitimately the internal justification??
I think you're giving them too much credit. The obliteration of all tradition, group identities, cultural norms, etc. is something Marx predicted capitalism would produce naturally as the relentless pursuit of profit acts as a universal solvent on everything extraneous to it