As long as the punishment is fair and not unduly harsh, I don't see any real problem with criminalising misinformation in general. It's already illegal to lie about facts in a great many contexts (e.g. fraud, perjury), and reasonable people don't have a hugely difficult time distinguishing a fact from an opinion.
As a trivial example: "This is mine and you can have it for a dollar" is not an opinion someone can be entitled to, it is a statement of fact that is either true or not.
I did the same except I did the lazy way for idiots: added a cheap USB network adapter to Home Assistant and connected that to a separate network switch. Reolink cameras have been rock solid and haven't complained about being air gapped from the internet.