Nothing. What people think and say is jail breaking is actually side loading custom android apps, which is actually already part of android. Amazon IMO made it more difficult than it’s supposed to be. I installed vlc and stremio and use it alongside all the other apps. Nothing groundbreaking nor illegal. That’s not jailbreaking, it’s using Android the way it’s designed to be used.

Mine too. I had to compile the drivers for a win modem (popularly called linmodem). Then switched to mandrake, mandriva, then Ubuntu 6 or 7, whichever came via mail for free.

Yes, com ports work way better than in windows. I’ve done a lot of embedded development on linux and it’s way more pleasant than in windows. One thing you do have to keep in mind is that access to com ports (USB and real) requires root access by default, but once you’ve set the udev rule up, it becomes accesible to normal users and/or group of users. After that, it works flawlessly. Android dev also works great and imo better than on win. Proprietary jtags may be an issue, but I’ve never actually had an unsolvable situation.

As a rust developer, I’m biased, but I think it might be a great thing, if done properly. I’ve also done some kernel dev a while back and it’s full of kernel-specific macros and conventions and boilerplate code. It would at least improve readability and reduce some boilerplate as well as improve on some common security bugs. But seeing as how different C is in kernel context to regular application, this may be the same for Rust, in which case I hope the devs know what they’re doing, because it can easily get out of hand.