Where in that did you see him advocating preventing the user from installing Steam? He's just saying that installing proprietary, DRM'd software reduces your fr

Where in that did you see him advocating preventing the user from installing Steam? He's just saying that installing proprietary, DRM'd software reduces your freedom; so if you want to promote freedom, you shouldn't install that software on your computer. One thing to keep in mind is that most of the time, he doesn't want to force anyone to do anything (other than make sure that code free if it was written under the GPL, even when modifications are made). He just suggests that people who value freedom do or don't do certain things.