1. When it comes to the overlay/panel/component, people are still connecting their twitch id with the game/TI. Nothing has changed there. This goes for any extensions on Twitch. If people are using the TI via chat their twitch ID still connects to it in order to receive/send info while playing...
I have tested the game and also played the game for a long time. Not sure how any of us streamers don't know how to do the stuff in the game. The other guys on the stream team have plenty of how to videos about 7 Days to Die.
I agree with that. Us as streamers advertise the game and try to bring new people in that has never seen the game. With spoilers, it's no different then when Joel will post videos on A17. You want to see as much info as you can for any new Alphas.