Horse manure, Marxists by definition have the goal of implementing the Communist Manifesto. You are confusing what they, or what past spokespersons for movements Marxists have co opted out of necessity say, instead of what Marxists do.
Modern Marxists have only one priority, and that is POWER (or control) by any means necessary.
Modern Marxists are in the unique position of having a philosophy that absolutely will not work, as it violates Natural Law. Communist states have proved that in their consistent failure, and that reflects on the label"Communism"..
Communism has a bad name so to speak, and Communists can no longer seduce enough Useful Idiot followers to make significant gains.
The solution for Marxists is to co opt a movement with more favorable name recognition and re brand Communism to a feel good, Utopian brand like, say, Environmentalism.
And that's exactly what they have done and will do repeatedly when their management destroys the credibility of the co opted movement.
Marxists have taken over the entire Environmental movement, and are running it to advance Marxism. They may say what Environmentalists want to hear, but they are lying for acceptance. When they have the power, there will be no interest in Environmentalist goals or policy.
The Marxists do not believe in any part of Environmentalist philosophy including the population control/reduction facets, they ONLY seek the power that they can accumulate from the movement.
"Environmentalists" including your public school children are the new Useful Idiots, But the Marxists are only concerned about power and slaves to work for Marxism, the more the better, they don't give a hoot about population control, they never did now or ever.
Whether Russia reverts to Communism again or not remains to be seen. but note that the Commies and "Democracy" types are against Putin and for Zero and the US Rats.