Nope. If those opinions are outside the bounds of what the public will find acceptable then they simply won't accept them and they'll die.But a complacent media can unwittingly introduce a hitherto largely unconsidered position and a complicit media can do so intentionally. This leads and foments opinion that actually has a smaller base and is more fringe than it actually is. So a hard, small base is misrepresented as having a foothold that it doesn’t really have.
If they're listened to and taken seriously by the public then they're already within the window - that's the point of the theory.