I always tell web developers I teach that the language of the internet isn’t JavaScript it’s C++.
Web devs are just users playing in a C++ dev’s program. ;)
I tend to think of the web and the internet as distinct things.
For the language of the web I'd probably nominate HTML.
For the language of the internet it's a lot less clear to me.
Continuing the analogy, browser devs are just users playing in C/OS/kernel program.