Most of the teams stream-watch
Well thank you so much for the groundless accusation...
Having a livestream on slows the game down a lot. I've tried playing casual matches while listening to Qwerty's stream (stream was for another match), and all I got out of that was extra lag. In a competitive match, you can't afford to have that. My captain was getting tonnes of rubber banding at the least convenient of times during the game against Polaris, and stream watching would have simply aggravated it. In addition, if we were to listen to said stream, there'd be loads of background noise that would interfere with more important things (I.e. Communication within the team). Plus there's the delay, which makes the information potentially gathered from the stream outdated (please put the delay on at the start next time, Qwerty). All in all, stream watching would be far more trouble than it's worth, and that's why
nobody does it.
And there's that thing called fun. We're not just here to win, you know. We want to play fairly.