I would like to add my two cents:
First, the bill in question can be reviewed
here. You will note, it adds to existing literature. From reading this, it would seem the bill is doing two major things. First, adding a harsher penalty to displaying copywritten material. Second, it adds more emphasis on public performances of copy written material. Games are already copy written material, they could already take you to court over displaying game play (but then we get into the discussion of the gaming medium, as various play sessions will undoubtedly not be the same). But they won't, because that's foolish. There are copywrites broken on the internet all the time (not just illegal downloads), but distribution of songs, artistic works, movies/media, images and trademarks that you wouldn't think twice about.
You think just because you bought a song on itunes you can stream it from your website? Heck, I was teching (running the audio visual) a conference at a hotel, just by chance a layer who happened to be associated with the people in charge of copywrites for the Beatles (the client wanted the white album played in the background durring lunch) happened to be in the hotel, heard the music, called his firm, found out no one had asked them, and shut us down. Music is the worst though. My friend was working on a student film and wanted to sample 30 seconds from some evanescence song (I don't judge his musical tastes), 2,500 $ for under a minute for just the artists, the recording company wanted more for the actual recording. Yikes.
Copywrites are a big deal, but the only thing this seems to change is the severity of the punishment. Its not like game developers are sending cease and desist orders to youtubers, they want there games to be popular. Also, youtube has purchased a gigantic amount of copywrites (I believe they have everything from warnerbros too before google bought youtube). Clearly, companies that distribute this content will have to (or may already have) bought permission to show it. Why this guy is having a cow is anyone's guess.