It wasn’t always an option - around the time of the first big mass migration of Reddit users it wasn’t something you could do. I actually wrote a tool at that time that could automate the manual action of re-subscribing / re-blocking everything.

But yeah, these days it’s a feature of Lemmy itself, which is great because it’s much more efficient than trying to do things client-side.

Super cool project. FYI it does require converting your ebooks to a special format.

I suspected as much since it’s using an Arduino Mega - very battery efficient I’m sure, but very underpowered.