No, it became atrocious. The world moved on and SourceForge did not, which is why superior offerings arrived.

And to your first "question", no. It had them in almost exactly the same incarnation as modern sites, but with a UX design language rooted (fatally) in the "best practices" of the web at the time. Unlike all the crazy things you'd have to do around FTP to get it to act like DropBox, SourceForge had the mentioned features built in from the start.

It doesn't really win GitHub any prizes to pretend otherwise, so I'm not sure why the pushback against simple facts.