Server hardware vendors have traditionally not given two shits about their servers being north of 90 decibels, and I'm pretty sure I've witnessed a few that were pushing 100.
That Raspberry Pi is probably going to absorb more noise than it makes.
Isn't the whole point of using these layers of abstraction over hardware that you pay someone else to manage it?
The only times I can imagine needing hardware on my desk are when latency is super important or when I constantly need to manipulate the hardware (change hardware, play in bios, etc). In either case, I would not use k8s to run my software.
Information radiators make no sense at all if you view them from a purely objective standpoint. Wouldn't it be faster to just open the web page on your computer? They only make sense because of the way humans interact with the world (and I suspect in particular, the doorway effect).
The last demo I saw for Pi clustering, the guy fiddled with the blink rate and color of an LED on the motherboards. Sounds boring, as a demo it summed up a whole lot of crap into a simple visual.
That person is also needed in the future, and that person needs to start learning somewhere. A good start is messing around with it on a few Raspberry Pis