If you don't want to play against a streamer, don't.
In tournaments, if you're afraid of being exposed, don't stream.
It's a purely personal matter.
A well-meaning person might offer a hint in a private message, but whether to read it or not is like choosing to look at a map or watch an opponent's stream: a worthy player wouldn't do that, and rules don't apply to the unworthy.
So, I don't see a problem here.
(с) Roger Zelazny