alt Hacker NewsOr, more likely, it's that concise code requires a much deeper, wholistic, understanding that these models just are capable of yet.
Same with a junior dev. They don't write long form spaghetti because they're trying to write more LOC. They do it because not doing it is hard, literally above their pay grade.
I use LLM every day, but they're still completely awful at architecture. I don't think this clear lack of ability is some conspiracy.
Personal anecdote: I spent a few days hacking on my compiler to remove 1k lines of code (about 15% of total code) while preserving behavior
I was only able to do that after I had solved multiple related problems in different places and started introducing subtle bugs by accident / had difficulty detecting all edge cases
I've noticed whenever I use LLMs they introduce the same kind of thing but at much smaller scales than I would. They often suggest solving the wrong problem when I prompt them to diagnose specific bugs too. Usually opting for a shortcut that introduces its own issues and ironically calling the proper direction "too complex" when it's really not.