If you have a hacked console (paperclip with a 1st year console, modchip with later ones), you can back up your saves using a homebrew app (checkpoint) if you remember to do it regularly.

You can also copy the saves off the console (or the emulated NAND you're supposed to create when hacking it) by running a different app (TegraExplorer) right from the bootloader. I had to do this when I messed up an update and my system wouldn't boot, but I hadn't backed up my saves in months.

I do wonder if anyone's attempted to get nintendo to respond to a subject access request in the EU to get their saves from their cloud service.

…and if you have a hacked console, you can easily and legally(!) just dump your ROMs and emulate as well.

I didn't want to run CFW, so I have actually written a tool to back up and decrypt all saves in a single click given any vulnerable Switch in RCM Mode. It's been really quite useful.

And you’re planning to create a GitHub gist later to share it right?

The savegame situation was part of what made me less interested in my Switch over time - I just didn't want to invest much time in any long-term games where I couldn't actually back up the savegames in any direct way. Now it gets pulled out every now and then when the kids want to play Club House Games or Mario Party.