Plagiarism was always a stupidity/laziness charge though. People too lazy to reword the thing they’re copying and too dumb to realize they’d get caught.
If anything, the charge has even more gravity now since now you were too lazy to use an LLM. Kinda like when you see bad English in an Amazon product listing and wonder if you even want to buy from a company who was too lazy to use a free LLM to fix up the copy.
If the ecosystem required copy and paste to discover copied ideas, then it was doomed long ago and it’s a good thing that the AI era finally forces real process change.
That makes a lot more sense when you put it that way. Nevertheless, it is ever more harder to prove something is legitimately one's own work. That is worrisome when it comes to science where credits matter more than for glory; job markets only value publication outputs which may have been cheaper to obtain with LLMs now and harder to distinguish what's yours and what's not.