True, but thankfully there are a lot of choices in that space, and it’s constantly growing. And if there aren’t, a lot of times it’s possible to make one (or buy someone’s) using an esp32 or similar. Zigbee, zwave, and matter devices should all be possible to run local only.
I watched the video and what they showed certainly looks impressive. The level of detail in actions, variety of gameplay, immersive first person perspective, and visual details all look good. I hope the game looks and plays as good as what’s shown and actually releases sometime soon, but I’m not holding my breath. Even if you ignore all the baggage the game has, gameplay trailers to games still in development are lies more often than not. I stopped following the development like 8 years ago, now it’s off my radar until it actually releases.