They are free to do what they want to on their repo.
We are free to fork if need arises.
Personally I don't like projects not showing what AI has made. And most of Claude was made on stolen code. Its against the open source license they themselves use https://github.com/lutris/lutris/blob/master/LICENSE
But almost no one actually enforces the license until the big companies show up. I hope they change their minds, but until then, im going to stop using/contributing for a while.