They don't work fine. I run lot's of TUIs because they are snappier. You may bury this problem with money buying 64gb laptop, but that facade falls as soon as you launch local LLM and discover there's no space left for Spotify.
Believe or not, millions of programmers (presumably the most tech-savvy demographic) use VSCode for their daily job.
Because it currently has best support for their stack. Being tech-savvy means also you understand, you can't move entire plugin ecosystem of vsc to notepad++ and call it reasonable.