Speaking as someone who grew up in the United States Waldorf community, I would say that the type of community you and I have experience with isn't tightly aligned with the right/left political spectrum. The political environment of the 60s and 70s was such that earthy-crunchy devotees found lots of commonality on the left; as such I'd agree with your statement. But ideologically, there's no reason at all why people focused on returning older ways -- for reasons of health or otherwise -- wouldn't align with a movement that rejects modernity.

I recommend Leah Sotille's new book Blazing Eye Sees All, which looks at New Age figures who have drifted into the MAGA movement. It's kind of wild seeing the channelers I remember from my childhood going hard right.