At the risk of sounding like "women be on the phone" a lot of my theories on modern conspiracy movements directly correlate to social media usage through smartphones. I'd have to guess the online communities where suburban white women congregate are already full of conspiracy woowoo and reactionary ideology so Qanon is the direct leap there.

There have been suburban panics over the dangers of child abduction since at least the 80s and they never really went away. Qanon's just the current culmination of the various tendencies.

Simply living in the suburbs induces a hefty social illness, something I should really form into a real theory sometime unless someone else has already done that. Suburbs present to you a simulation of community, but that's not what it is. You're not forming a community with the people living in your suburb. You're forming proximity. Of course people can still make real human connections, but the implicit assumption is still that your neighbors might be freaks so you build fences for privacy, get a private security company to respond to alarms, and you attempt to have the nicest yard in town. You're a competitor with and defender against these people you live around, yet they're supposed to share something with you. It's an illusion of community which must necessarily fertilize conspiracy mindsets, since you can't even trust your own neighbors.