Unfortunately, retrofitting CSP on an existing site can be nightmare, especially if you have external dependencies. At my job, we spent months trying to enable CSP on one our oldest sites, but ultimately gave up because one of our dependencies won’t work unless we added “unsafe-inline” everywhere, which kinda defeats the whole point of CSP.
I remember reading an article (can’t find it right now) from a PHD dropout who was doing research in string theory. One of reasons he dropped out is his frustration at how abstract and disconnected from reality his work was. His advisor (and his colleagues) didn’t have that problem, because to him, the math behind string theory was an ends in itself. There’s beauty in math, regardless of whether it has any practical application. If string theory turns out to be an accurate model of reality, then that would be a nice bonus, but that’s not why his advisor studied it.
So to answer your question, if we somehow reach the point where everything that can be feasibly discovered has been discovered, then theoretical scientists would make up their own models and study those.
For extra fun, you can name your variables using solely Unicode invisible characters (e.g. non-breaking space) so they’re impossible to visually distinguish