In your opinion, which FOSS software is by many considered "old" or "obsolete", but are in fact, in your opinion, in many ways better than the newer alternatives?
Even as a techie myself I found making Emacs just as featureful as VSCode impossible. The debugging you can do in VSCode is unparalleled and using a cli tool is not as easy or quick as using the VSCode debugger. The editing itself is amazing (better than VSCode) but the learning curve is not worth it when I can't just do everything in emacs.