I don’t think anyone is passing slop off as their own for long.
There was a recent study that showed that people preferred AI writing to human writing.
The gist of the study is they took published short stories and prompted AI to write a comparable short story. They then presented the stories to a group of people, sometimes telling them which were AI written and which weren’t, but sometimes they intentionally lied and said the human-written story was AI written and vice versa.
People prefer AI written stories, and unsurprising, if they have a negative view of AI, they’ll rate stories they think are AI as worse, even when it’s not actually written by AI.
They also performed a test to see if people could differentiate between AI and human stories, and people could only tell ~45% to 50% of the time. Essentially a guess.
Now, being better at writing short stories doesn’t necessarily mean better at all forms of writing, but I think people who aren’t using AI have a mental snapshot of the capabilities of AI at some point in the past and assume AI hasn’t improved further since that mental snapshot was taken.