Quite a few Live streamers on Twitch are professional players, in fact G.J.Reggie, Benjamin Spragg (Spraggy) and Lex Veldhuis are all on Pokerstars team and are sponsored players, Lex used to be on the T.V. Poker shows like The Big Game and Late Night Poker.
So they are a mine of information and when asked will respond to many of their viewers, about specific questions, It is shows like those that got me interested in Texas Holdem, because before then I had only ever played 5 Card Draw and Stud and they are played with a totally different strategy.
I learned enough about Texas Holdem watching the T.V. and Twitch, about how the game is played to eventually try and play myself, first On-line, then taking my On-line experience out into the real World of Live Poker.
I have never regretted my hours of watching Poker and sometime's I will watch one of the "Twitch" streamers while playing a free-roll On-line, I cannot say it helps me to concentrate on my own game, but I do enjoy playing and watching some of my Favorite streamers, in fact some time's they have their own "Home Games" where anyone can play against them and you can appear on their table during a Live stream.
It's all good fun and enjoyable.
When the fun Stops, STOP!