Of course it does? Most people are not going to go out of their way for it unless they have specific reasons to do so. What's on/available by default matters. (Ask any UX specialist.)
I should know better, my wife is a UX specialist!
You make a good point. What I should have said is that it won’t stop people who really want to watch it.
But then that isn't the goal: totally preventing you from ever seeing Al Jazeera or somesuch. As you noted: that'd be curtailment of freedoms only befitting dictatorships. Nobody wants that.
Making it slightly more difficult to consume outright propaganda by not having it front and center; that seems to me to be a very much acceptable move for democratic and free states to make in the context of information warfare.