that conclusion is a bit too black and white for me, that study was only done on students who were using chatgpt to write an essay
meaning they didn't use it for research they simply told chatgpt to write the essay and copy paste
they didn't proof read or anything, so of course just like copying your friend's essay you won't learn anything
I think extrapolating such broad conclusions from such a narrow study can't be done, there are many different ways to use these tools and this is obviously not a good way. just like copying an essay from your friend is not a good way to get through school