Twitch is killing itself with those pre-roll ads, if I click a stream and the first thing I see are 30 seconds unskippable ads, I'm closing the website.
It's a good thing this "Watching a playthrough is just as valid as playing the game!" stuff didn't exist in the 2010s. Back then YouTubers had to argue that them playing through the game wasn't infringing on the games original market to prevent their footage from getting claimed.