Do you think there are potential problems giving the government the power to pick and choose what public information you should be charged for accessing?
I know I'm not who you asked but I disagree with the idea of a slippery slope in general. It tends to imply that if step A happens step Z is guaranteed to happen without any consideration of where a line is drawn. It is possible for us to regulate some harmful information without regulating all information.
When it comes to government use of powers that have been granted to it, slippery slope is always a valid concern.