A version of this does exist in left-wing infighting but this narrative specifically has been and is constantly repeated by the American right, probably some of the centre too:
Every Marxist state (USSR, China, Cambodia, Cuba, North Korea, Vietnam) produced authoritarian regimes with mass deaths, poverty, or corruption.
It’s currently being deployed to attack the insurgent left that’s contesting some elections this year, along with the resurgent interest and popularity in socialism over the last couple of years.
Everyone on the left has grievances with these past and present projects. Including MLs.