Scouring GitLab CEO here, as requested :) You asked for feedback on your negative comments on Savannah. We love free software and the ideals of the FSF, so I hope you understand I'll refrain from commenting. I do want to share something interesting with the caveat that it is a 'GNU projects for network services' server, not an official one, but we're happy to host https://git.gnu.io/explore/projects
We make almost no money on the hosting. Almost all of our income comes from on-premises installations at larger organizations. So that is why I can recommend monetizing open source with an open core business model.