The problem is that it had a change of owners, and the new owners started bundling non-free spyware and malware into the installers of otherwise free software. Which is way more serious than simply having a website that is hard to navigate.
SourceForge got a well deserved backlash from the community following their underhanded tactics. Not sure what the situation is now.
So i gave you an answer from the person who is in the best position to answer it.
> they already butt-in unrequited to a twitter thread I was in to do some weird PR bullshit
How is that relevant to this discussion? Nobody even mentioned twitter.
As for the UX, yes it isn't great, nobody claimed it was. But they did make an attempt to improve it, here is how it looked when they bought it (some random project page):
http://web.archive.org/web/20161108001911/https://sourceforg...
(now if the new one is an improvement or not i'm not sure, i think the new one has more user-oriented information "above the fold" despite being larger in size but overall the difference isn't that big)
Asking for a citation isn't itself denial
> How is that relevant to this discussion? Nobody even mentioned twitter.
The CEO of sourceforge is so desperate to say it doesn't contain malware that they butt into twitter threads to do unrequited PR.
> But they did make an attempt to improve it, here is how it looked when they bought it (some random project page):
Which is objectively more usable from a UX standpoint than it's current interface.