If I got an old kindle; how easy is it to jailbrake it and install a better system?

I have a kindle keyboard (2012) and I gave up on amazon a long time ago, now I just convert-upload epubs to it using calibre and read.

My older Kindle is jailbroken and does just fine. Jailbreak if you can, if you can't don't Kindle.

Any suggestions for which Kindle to get off of ebay for jailbreaking purposes, when they start showing up en masse?

Meanwhile my eco reader i bought in 2009 is still trucking

Jokes on Amazon I already jail broke mine and can directly download books from my Calibre server to it, KOreader ftw

YSK, there's a large number of older Kindles that can be jail broken.

I just ssh pirated .mobi files into mine

Jailbreak then⚡

Does anyone else just read on their phone? I use Librera ebook reader in dark mode. The app even reads to me with tts while I'm driving.

Haven't picked up a paper book in over 10 years!

If only my 2 Kindles had lasted more than a year...