It is cemented in legal certainty with the US Copyright Office ruling, released just a few days ago. So anything you have read previously was conjecture and is now out of date. Read it, direct from the source.
Copyright Registration Guidance: Works Containing Material Generated by Artificial Intelligence
Here's a video covering it.
I was basing what i said off of what i read from the newest info on that link you shared. I will have to check these out in a little bit when i have some time. Thanks again.