

There are two layers to this (actually a lot more but)
What you are describing is mostly supply chain. It is the idea that the package manager’s inventory should be safe. And that is already a nigh impossible task simply because so many of the packages themselves can be compromised. It seems like every other year there is a story of bad actors infiltrating a project either as an attack or as a “research paper”. But the end result is you have core libraries that may be compromised.
But the other side is what impacted OP and will still be an issue even if said supply chain is somehow 100% vetted. People are inherently going to need things that aren’t in a package manager. Sometimes that is for nefarious reasons and sometimes it is just because the project they are interested in isn’t at the point where it is using a massive build farm to deploy everywhere. Maybe it involves running blind scripts as root (don’t fucking do that… even though we all do at some point) and sometimes it involves questionable code.
And THAT is a very much unsolved problem no matter what distro. Because, historically, you would run an anti-virus scan on that. How many people even know what solutions there are for linux? And how many have even a single nice thing to say about the ones that do?





I used a boox for maybe 7 or 8 months? I do not recommend them.
There is a native ebook reader. It is… real bad. And the book management is similarly really weak. Great for throwing a quick PDF on there, not so much for having a “library” as it were where you don’t necessarily want to have to remember which was book 3 of the series while you are on a plane. Not sure if the Calibre support got better to help with this (I know the Calibre devs recently made a huge effort to support non-Amazon devices) but when I used it it was all about you building your own folder structure.
But mostly it is designed around taking advantage of being an android tablet with an e-ink display. So just use the actual kindle app and so forth. Which, on paper (hee hee), is really cool. In practice, you rapidly realize that the kindle et al apps are designed with a fast refreshing display and most of the UX is built around holding a phone in your hands and not gripping a good sized tablet on its edges. LOTS of accidental page skips and font shenanigans.
Also, the android it runs is fairly out of date which is a pretty hefty security concern.
And there is a LOT of “mysterious” traffic going off to servers in China. How much that bothers you is… up to you.
Switched to a kobo and incredibly happy with that.