Fooby, I think you have completely accurately picked up the intent of the QAnon vids and the like. Thank you for your succinct summary: I think you've done a very good job of identifying and articulating it.
The point of QAnon and like conspiracy material is to induce unease and distrust, to detach people from their usual sources of finding out about the world, and to throw their usual healthy scepticism out of kilter by casting doubt on everything.
They don't have a real case to make that the US is going to declare war on China in 30 mins time, or that the Royal Family are lizard people. It's not about establishing this case, using facts, as we are used to; and therefore cannot be rebutted with fact. ("Look, US not currently at war with China!") It's about creating unease and distrust.
Sometimes this unease will be directed at something or someone in particular (Clintons, vaccines, you-name-it). Again, not by creating a factual case which would stand up in a court of law, in science, or tested it in any way. But by creating Fear Uncertainty and Doubt.
FUD has been used a marketing tool by companies for decades, to discourage clients from buying their competitors' better products. It's ironic that Bill Gates has been one of the targets of the current Covid FUD, because IIRC Microsoft was big into using FUD to trash competitors! (Anyone remember the SCO debacle?)
en.wikipedia.org/wiki/Fear,_uncertainty,_and_doubt
Anyway, conspiracy vids are the FUD of the social and political world at the moment. They're absolutely supposed to make you feel like that; it's a very self-aware person who is able to articulate so clearly the effect experienced while watching them.