I bet it’s more pernicious because it is easy to incorporate AI suggestions. If you do your own research, you may have to think a bit if the references/search results may be bad, and you still have to put the info in your own words so that you don’t offend the copyright gods. With the AI help, well, the spellings are good, the sentences are perfectly formed, the information is plausible, it’s probably not a straight-forward copy, why not just accept?