It feels like I'm getting more jaded everyday because the moment I started reading this article I was convinced it was written by an AI.
From a hosting perspective which the article talks about I would worry more about just keeping the AI agent functional/alive in a whatever environment a big challenge, using AI a great but stability in any basically use-case has been rough for me personally.
From a developer perspective I've been using devcontainers with rootless docker via wsl and while I'm sure there's some malware that can bypass that (where this VM approach would be a lot stronger) I feel a lot safer this way than running things on the host OS. Furthermore you get the same benefits like reproducibility and separation of concerns and whenever the AI screws something up in your environment you can simply rebuild the container.