Most algorithms are reusable, while most GUI code is not.

Hence, most actual programming is happening on GUIs.

Hm, depends on the business, I guess. Because from my experience, most business algorithms are proprietary and don’t have proper specifications. You can’t just use them somewhere else. You have to recreate them from scratch.

Probably because your devs didn't write them in stored procs like they should.

Only roughly half the world believes in SP's. The other half (like me) believes that writing even the barest of hints of logic into SP's is a serious crime.

So you'd rather write the same logic in every app, and trust that every developer of every app does the same and gets it identical? Good for keeping busy I suppose but if I were your manager I wouldn't pay you for it.