tl;dr
Should I avoid sideloading books into the documents folder to prevent "Deregister Kindle" from erasing my library and hiding my sideloaded books from Kindle Home/Library and casual snoopers?
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Stumbling along with my adventures in ereading. JB'd my used Kindle 8th generation. Sideloaded a few books with Calibre, registered my Kindle to get access to my online books.
As a result of registering my Kindle, picked up "Swipe to Unlock" lockscreen ads (the Amazon version of gonorrhea) even though I never signed up for that when I was gifted the Kindle (we can skip the discussion about that though 'cuz like most STDs and beggars you can make them go away with a little money).
Had enough fun with sharing my Kindle with the Amazon Mother****
and deregistered the Kindle. Lockscreen ads still there
but everything in documents disappeared including Kual. Back to Calibre to reload the books and reinstall KUAL with mrpackages and ";log mrpi".
As I might take advantage of intermittently connecting my Kindle in the future while travelling away from my Calibre computer/server, I'd like to avoid nuking my Calibre books. I can always reinstall the KUAL bin with my phone but does creating a new directory for sideloaded books other than documents make sense by preventing losing my library?
Would it hide sideloaded books from Kindle Home/Library and muggles playing with the ereader?
Is there any benefit to deregistering the Kindle or are most of you running JB'd Kindle with Rename Binary or renameotabin extension and not worrying about it?