I think it makes it easier to add contributors. Git doesn't allow a user partially access a repo so Paul would add a few people only contributing on one script. I added some really talented contributors :)
The repo under my name doesn't mean it belongs to me. In fact it belongs to the public. Everyone can contribute to it so everyone is the "owner". That's how I see open source projects.
I don't mind giving it back to Paul. I did it only because I needed it. I believe a lot of people would want it more accessible too.
I see a lot of projects that's written in other languages on npm, especially bash. Substack even published c code to npm. I think it makes the script more accessible especially for nodejs users. I don't mind publishing it to other package mangers.