A lot of Marxists tend to look rather poorly at any mixed Socialism blends as either heretical or as liminal states with Communism as a complete end goal instead of being legitimate in their own right.

Additionally, those instances delete any comments that don’t align perfectly with their agenda, and routinely ban people who want actual discussion. So they’re not a place to discuss ideologies, they’re a place to pat each other on the back and talk about how smart and right they are.