I think the idea is rather, that read only container - as the name implies - only read and drive write. Since SD cards aren't exactly great at being written to often, that could increase the lifetime of the SD card.
agressivelyPassive
Are you married to SBCs? There are dirt cheap, pretty powerful and small thin clients floating around in ebay. HP G3 mini for example.
It's not a copyright problem. You get demonitized for saying "suicide" for example. They want an artificial happy place where no bad things happen and we can all have fun watching ads forever.
Ok, serious question: what is the course here? Can you be forced to swear?
How often do you have an emergency that combines lost wifi and inability to leave the basement?
No matter how you think about nuclear power in general, it will not be of any substantial help against climate change.
It's expensive and takes forever to build. Even the optimistic projections of the vendors are well above what wind and solar deliver right now.
Nuclear power is just a tech bro pipe dream. Nobody needs it. It's just prestige.
I found it fairly difficult to set up nixos on one of my machines, because it simply didn't ship with a certain, relatively common kernel module/user space app. I also couldn't find a usable workaround (only compiling my own kernel on every update, which is not exactly my kind of fun).
So, you might want to try that out first.