"In Qanon the "secret rite" is going down the YouTube rabbit hole and writing endless diatribes for other cult members to consume."
No, that lacks the characteristics of all "secret rites". If you're "writing diatribes" and posting them publicly, that's not secret, for one.
I can't exactly write an essay here about what secret rites are and what a key structural component they are, but you can get a good sense about them from reading about hazing, then amping it up to the next degree: https://people.howstuffworks.com/culture-traditions/national... (It was actually hard to find something that actually talks about why it occurs and is a stable pattern in human subcultures, rather than just decrying it without explanation. I don't like it and don't agree with it; in hindsight, I accidentally broke the hazing chain in my high school band because I refused to propagate it. It was an accident, though, because I didn't understand the purpose. Now I do, and both know even more effectively how I'd break the chain and how to attain similar goals in an organization in positive and healthy ways deliberately, instead of accidentally.) "Writing endless diatribes" is nothing like hazing and accomplishes none of the same goals.
Again, if you're going "but but but" in order to try to salvage the idea, you're trying to hard, and the reason I'm banging on this is the same reason the original poster posted. If you want to understand cults, you need to not fall into the trap of declaring your high school band, a popular Pokemon internet forum, or a chess enthusiast club to be "cults" too. Cults are a very serious problem that deserve to be understood, not minimized because some people want to use the term to slur some other people online.