I'm with you, my reading device is something where I don't want to fiddle or be distracted by settings and options. I just want a stock, opinionated device with good defaults that just works and I have to charge once a month. That's it.
It does refresh the lockscreen ads for a month or so, though. I have a cover so they don't really bother me.
Exact reason why despite having a jailbroken Kindle, I stick to the stock book browser. It's so tough to navigate on an old-gen Kindle with a low refresh rate.
I had the same problem and someone here shared the plugin, it does the job very well independently of your file structure and nesting.
Over the years I've gone from Kindle to Pocketboot to Boox to Kobo. Sometimes eReaders break, sometimes I hand them down to family members. Whenever I need to buy an eReader, as long as runs KOReader somehow I can pick the device purely based on its hardware instead of worrying about the stock software, compatible formats, etc.
But you're absolutely right that finding the specific setting you're looking for is an unintuitive process.
Feels like you have my problem: "I can not be bother to switch from another app".
When every one wants their e-reader with custom setup you get that long list of options. Since the beginning of computing I have always wanted a custom UI on apps, i.e. add an icon here that does these three things in the app, or "add this view to that window". Even browsers plugins have a hard time getting it right.
I had the same problem with the missing Home Screen view and that solved it: you can see all your books no matter how deeply nested they are
There’s no benefits if you get your books from the stores. But if you manage your ebook library yourself, koreader is great.