I would like to compare your proposal mechanically to Scientific Method.
As you know, Scientific Method is a gateway tech to a number of highly critical and important techs,
namely Physics & Biology, and a number of military oriented technologies that come after it.
It comes at a severe cost in that it obsoletes the tech bonus of Monasteries, which up until Scientific Method, contributes a significant portion of your beaker output.
So do you choose to tech a little better for awhile? Or do you get that military edge at a time when your contemporaries are likely upgrading their armies?
It's an interesting choice and that's why it works for Scientific Method.
Take your proposed Mass Media nerf though. Let's say Mass Media inflicts -1 civ-wide

upon discovery.
You'd immediately have to build Broadcast Towers in all your cities to offset the malus you received.
The thing that bothers me is that none of the techs you listed make the player make any kind of interesting choice like Scientific Method does.
In short, it doesn't really add, only takes away; with the exception of Mass Media, in which it provides access to Wonders, but it's not "big" enough of a thing to justify the -1.
Mass Media, Fascism, & Nationalism don't really open up any critical techs that you would have otherwise been forced to choose from as well, unlike Scientific Method.