Somehow I missed that SourceForge and Slashdot were sold at the end of January.
New owners promised to stop monetization practices that undermined the developer's trust and caused prominent apps to leave the site. And they already started delivering on that:
Our first order of business was to terminate the “DevShare” program. As of last week, the DevShare program was completely eliminated. The DevShare program delivered installer bundles as part of the download for participating projects. We want to restore our reputation as a trusted home for open source software, and this was a clear first step towards that.
A move in the right direction, but it remains to be seen how much that would help to ensure SourceForge.com's future.