And of course like your scholar they are free to make up there own interpretation at any time. If they can get enough of their colleagues to go along then that interpretation becomes the meaning. Maybe start with something reasonable like shouting fire in a theatre.
But after two hundred years that meaning can drift pretty far. What was originally purely a constraint on the power of government can be transformed into a constraint on the rights of private citizens - the very people the bill of rights was meant to protect!
Is there any wonder why the forth amendment has done so little to stop mass surveillance? Or individual health insurance mandates are constitutional because they could have been implemented as a tax? Or the commerce clause covers absolutely anything? Or words like "is" and "no" can simply be redefined as needed.
Perhaps I am naive but I would like laws that most people can understand by reading them. Too bad the people interpreting and writing our laws have every incentive to continue to do exactly the opposite.
Sorry for the rant!
To put it in HN terms, suppose I were to say "It's pretty sad that we can no longer look at assembly code to understand what our computer programs will do. Instead we need to pay software engineers to tell us how they work even when it's doing something simple, like running a search engine."
And it's not just this article. See almost any discussion forum where moderation has come up and you'll find invocations of the first amendment. See Sarah Palin saying her first amendment rights were violated because she was criticized in the media (and the assenting opinions by far too many). On and on. These people, who make a very specific claim, have not even bothered to check the basis of it. They wouldn't need to learn too much of the finer nuances to realize their claims were invalid.
I also think this narrow view has made you jump to a much stronger conclusion than is warranted. At least one scholar has considered whether the First Amendment could be interpreted to require that contracts of silence be unenforceable. http://www.lawschool.cornell.edu/research/cornell-law-review...
In this case you happen to be mostly right, but don't assume you can understand the contours of First Amendment law just by looking at the text. There is a vast apparatus that has been built around the First Amendment, little of which is deducible from the constitutional text alone.