Yes, they are well-founded as has been shown time and again. But the article is about copyright assignment, not changing the license. The debate around copyri

Yes, they are well-founded as has been shown time and again. But the article is about copyright assignment, not changing the license. The debate around copyright assignment is whether there's any need/benefit to have a single entity 'own' all contributions vs. the individual contributors retaining ownership. There are a couple of big downsides to copyright assignment in that there's a longer term risk that a malicious actor will gain influence on a given project and change the terms going forward which has a tendency to drive potential contributors away. This has happened with various partially-open source (dual license, open core etc. types of projects) projects over the years.