For example, there are things like NodeOS, a “Lightweight operating system using Node.js as userspace.”

No way this exists.

Wtf, it exists. Why would anyone do that to the world?

From personal experience, the Chromecast 4K on its is very limited on free space. That means if you want to install more than a handful of apps, you will need to resort to a USB hub, most likely a powered one, to connect a USB flash drive or SD card in order to expand the usable space.

If you think that’s not a problem, the Chromecast is a very capable device. I won’t put it on the same level of performance like an Apple TV 4K, but it can do everything I throw at it, albeit in some slowness from the UI from time to time.