Did you try su -l?

Depends on the plastic, but if you’re using an extension cord or power strip that smells like burning plastic, that’s also a fire hazard. I know I wouldn’t be continuing to use it

Both. Everyone is afraid of AI taking over but it’s just a tool. Human augmentation is way more likely to lead there. But in the mean time, Stephen Hawking lived quite a while only being able to speak with augmentations. Just like any other technology, it will be at the very least researched in fear that someone else will first. So might as well embrace it

Ubuntu. Package organization is annoying, versions are out of date, managing multiple versions isn’t consistent, and distro upgrades always have unintended consequences. Often ones that aren’t easy to figure out. Their reputation for being beginner friendly should have died around a decade ago.

Second on kobo, sure the OS is proprietary, but it’s good enough that I forget. And as the previous comment said, you can install third party reader software. I like koreader, it pretty much replaces the entire UI of the device