So, I'm all for promoting this very important idea. I don't see a problem if both are watching each other's streams; they agreed on it, and they both know it. This is about bringing the principle to the forefront – there are situations where we both watch a stream. And there are all the standard Tournaments and games where we both (we both!) don't watch a stream; we agreed on that.
I'm 99% sure that stream-watching is currently thriving silently (in some places) within the community, in part due to the silence surrounding it, and the predictions that such a Tournament will increase the number of haters are, in my opinion, very inaccurate. Why suddenly? It might even reduce them. For me, it's also a nostalgic reference to games from 15-20 years ago, like Davos mentioned, when we would gather at someone's place and play together, four or five of us. And here, the matches will most likely take place in a friendly atmosphere, and it will be less tempting to "expose" someone in a serious Tournament whom you were in a friendly atmosphere with before (and the atmosphere of the stream also extends to a significant portion of the viewers).
ps, to be honest, after reading what Toga wrote, it became clearer that the Game Master emphasized the wrong things, and the associations are negative; this is something to think about