Qanon is both alive and dead. It's alive in that every person has their own personally curated algorithm feeding them conspiracy theories, each more specific and confusing than the last. It was bound to happen eventually because nothing tied Qanon together politically other than being a gullible conservative dipshit. I also have to imagine a lot of its fiercest adherents were very elderly or in poor health, so a bunch of them probably didn't survive covid. So what's left over is people who were already conspiracy minded but Qanon was simply one of the things that they believe.

Qanon is dead in that conservatives kept running into the problem that everything they love: American empire, the capitalist class, Donald Trump, are all inexorably linked to Jeffrey Epstein. So conservatives now associate accusations of pedophilia with liberal fear mongering.