I'm a game developer mainly writing/reading/debugging C++ on a codebase that's well over a million lines of code. As with most game-dev I'm developing almost entirely using Visual Studio, and I can't imagine trying to navigate code using a terminal based editor. Maybe it's just because this is what I'm used to, however I just don't see how some of the tools would even be displayed in a terminal (parallel stacks windo…
Some game devs prefer to use VS with an external editor (as shown by Casey Muratori and Jonathan Blow in their live streams).
Since he started streaming he has moved (from emacs?) to I think http://4coder.net/, which seems to have spawned from his audience. Similarly, a few debuggers have, too. https://remedybg.handmade.network/ https://lysa.handmade.network/ but I think he still uses VS' debugger.