During the early days of cell phones, replaceable batteries was the norm, not the exception, and it was as complicated to perform as your TV remote. No need for training. In these modern days, you may want to turn off your phone cleanly before proceeding, but that’s pretty much it!

Let’s not even talk about the early handheld game sets: the GameBoy (Nintendo) and GameGear (Sega), that were using regular disposable batteries (rechargeable ones were recommended though!).

Vendors have made our devices complicated to repair to lower costs and later to make our smartphones water resistant. They started off being easy to disassemble and re-assemble.

It IS literally a Linux distribution, based on Debian with a layer on top of it for easy admin and managing applications. So you don’t install it on Linux, you just install it.

So, if you don’t know yet what you’re doing, I wouldn’t host anything critical yet, but I’m using:

https://yunohost.org/

And so far, very few troubles. It’s a layer on top of Debian to ease self-hosting. Comes by default with email and XMPP server. You can add Nextcloud and many other services as you wish.