Idealism. Claiming that ideas are the root cause of a great deal of the world's problems is the opposite of materialism.

Magical thinking is a behaviour, not an idea.

Marxism is itself a religion that demands taking a lot on faith (revolutionary optimism is faith; belief in revolution is faith; belief in an eventual better world in the future? Faith.

It is absolutely not faith, Marxism is a series of conclusions drawn from evidence.

indigenous religions/spiritualities are materialist in that they are methods of describing and organising empirically obtained information, disregarding theology which no longer holds true to investigation.

Spirituality cannot be materialist. Methods of describing and organising information that assumes something beyond what is observed is fundamentally not a materialist approach.