Most people still use desktop software for large projects ? Adobe stuff, music software, basically any advanced authoring software - the performance of the web platform is just not there for projects measured in dozens of gigabytes of media, hundreds of AVX2-optimized plug-ins, etc (and it's a field with a large tradition of benchmarking software between each other to find the most efficient, see e.g. dawbench)

I write backend code, and it's basically Java + Spring. No web technologies beyond HTTP in sight.

> There is hardly an app that I use these days that doesn't require internet connection.

well, most of the ones I use (my note taking app, my text editor, my music player, my file manager) don't so YMMV