I finally got around to listening to the podcast and reading all the comments. I'm a little surprised that so many people were unaware of the Twitch culture. I come at this issue as someone who plays Vintage in paper exclusively, because I cannot bring myself to pay $1,000.00 for the privilege of playing a video game. I'm an exclusive spectator, and I haven't seen that perspective discussed much yet.
I think of MTGO games in the same way I think of watching a college football game. Sure, there's a game going on, but good streamers provide tons of entertainment value and insight into the decisions being played. I love watching the VSL, LSV, and Rich's streams for this reason. I don't want this kind of thing to be discouraged.
I also completely agree with Steve when it comes to the >EFFECT< of trying to restrict collusion in MTGO. That is, it wouldn't work at all. You could drive people off of streams, and prevent pro teams from publishing the fact they work together in a hotel room, but that's all you'd accomplish. And the interested viewing audience loses while the problem continues.
As I try to put myself in the position of someone like Brass Man, who plays online, I'm not sure how I feel about it. I can sympathize with someone who thought they were playing for cash money against a level playing field and finds out they were not. But, on the other hand, I could also see people who want to play exhibition matches at the highest level. That is, the value of the games for some may be in WINNING, and for others in PARTICIPATING.
And, let's not forget, even paper magic has plenty of team and community based collusion - it just happens during deck selection and testing instead of during the match itself.
So... I guess I'd like to see streaming and collusion continue, but Wizards might want to put a disclaimer on MTGO making sure people know this is a thing.