So that pretty much caused whoever still used it to stop. They sold to a new company who stopped that practice but I can’t think of many projects that want a managed SCM that felt there was any reason to switch to sourceforge from GitHub or gitlab after that, which is where most projects have ended up one way or another.
Their new owners now call sourceforge a place for “business software” which seems like hopefully the final stage which will bring sourceforge’s long slow decline to its end.
Edit: it looks like their latest owner (2020) is slashdot. So. I guess they will capably oversee its continued slide to irrelevance.
Not really, it's actually that Slashdot had also been sold to the same company! Just like SourceForge, under Dice.com's new management, it caused significant negative reactions among users in 2014 (that even made it to the Washington Post [0]), , and led to the creation of a Slashdot fork - Soylent News [1]. Later Dice.com sold both company to someone else again.
[0] https://www.washingtonpost.com/news/the-switch/wp/2014/02/07...
[1] https://soylentnews.org/article.pl?sid=14/02/17/0148235
Note the comments, "In Slashdot Beta, Dice rolls you!" The forced Slashdot Beta rollout was the key of the controversy.