Yes, namespaces are specific to your username. Nobody else can publish packages under your username namespace. I think it's less common because it was released

Yes, namespaces are specific to your username. Nobody else can publish packages under your username namespace. I think it's less common because it was released along with private modules and is often conflated with them. Basically all packages are still namespace-less. TBH I never thought about the benefit they'd have until now.