You can certainly dispute it if you want, but you need to back your opinion up with evidence in order for it to have more merit. You can name 5, 10, 100 names to me and it doesn't mean anything until you consider sample size. 100 big-money accounts, for example, out of the over 40 million(I could be wrong about this number, but the total is really high and definitely in the millions so I'll just edit this) many millions of total registered users of Twitch is a vanishingly small percentage. Naming random streamers that have made it does not invalidate my or Zaiden Shogun's point; in fact, it strengthens it. No one remembers the countless that have failed, they only remember the very, very few that have succeeded.
I'm not saying streaming is bad, or that you can't make it...I'm just saying that it's very unlikely so don't count on it.