Concerning 1: My code is regularly horrible. I start any project in pure prototype mode. How quickly can I get what I want on-screen and working, so I can figure out if I actually like it enough to keep going in that direction? Once I'm out of proof of concept mode, I start working on things properly, and inevitably some horrible prototype implementation of something will survive for several months. It's always entertaining to anyone else in the room when I stumble on this, and loudly exclaim "Dear god, what was I thinking," usually followed by inquiries, explanations, and humility. Bonus points if my old code is the source of some mysterious problem that is now solved. :)

Concerning 2: I would never code something actually sensitive on twitch. Fortunately I enjoy programming video games, so I can stream that with relative safety, but I wouldn't ever stream something from my real job for example.