“I came across this at a very sad point in my life, it was on a hard drive on a vintage computer I bought off Amazon,” Marshall explains on the expansion’s GitHub page. “Literally this essentially saved my life, I was going through a divorce and just happen[ing] to come across something like this was insane.”
Just finding something by accident doesn’t give you the right to publish it.
If you found someone manuscript in the drawer of a desk you bought, you would not gain the right to publish it, it still belongs to the person that wrote it. Physical possession has nothing to do with the right to distribute, that is IP law that goes back a hundred years.
Okay well would he at least be in less trouble than if he’d made any money off it?