> Personally I don't get why there's so much negativity.

I'm guessing a significant portion of it comes from how terrible the SourceForge experience has been for a very, very long time (I don't know if it's changed, I haven't had to actually use sourceforge in a long time): insufferably slow, brain-dead logical layout of project pages, UI complexity, ...

The kind of feeling which comes from having to use a crappy tool for a long time does not go away easily.