I'm not sure how that demonstrates QAnon members are not generally trapped in right-wing echo chambers. Are yoga practitioners exempt from right-wing echo chambers?
I suppose a significant number of yoga teachers/influencers could be secret dittoheads, but the idea kind of beggars belief.
One of the interesting things about QAnon is that it offered on-ramps to groups outside the stereotype of people would go for such a theory (e.g. "save the children"). People in right-wing echo chambers were definitely more susceptible, but it's a mistake to be reassured by that.
Also, particular echo chambers aren't some kind of primordial entity. They start all the time and they often grow. So even if something like QAnon requires one, that just means there's one more step.