This, it baffles me to no end that people insist on using Raspberry Pis, which are almost comically slow and not really that energy efficient, to run things like K8s scheduled containers, sometimes even buying $200 backplane boards to do so, which also defeats almost any sort of price advantage.
There has to be something about the Pi that drives this, but I can't figure out what it is. Yes, Raspbian is easy to get start with, but no easier or harder than booting a VM locally or on the cloud with an image. Yes, Pis are small, quiet, and low power, but so are NUCs. Sure they're cheap, but once you buy 4 Pis and some fancy backplane manager, you could have easily gotten a NUC or a used PC instead.
Please just buy a real computer!
Pis are exceptionally good for a lot of real use cases where the form factor, GPIO capabilities, or pre-approved module certifications are essential. Not being able to get them because of "cluster" use is annoying.