Ultimately, this is just speculation, but at least for me, it's the most plausible explanation without having to declare him dead:
If he had income from Patreon, etc., and perhaps even more than he expected, then he almost certainly made a mistake that would very likely have happened to any of us. And that would be failing to pay taxes on that income. If you're really rich, it's somehow not as bad as when an average person does it. Because above a certain amount of taxes, it's no longer just about paying the sum back, but also about how long you have to go to prison for it.
Because unfortunately, in every country in the world, stealing from the state is worse than, for example, murder.