To this day, the Debian community is the only community where I have not been able to get past the initial stages to get involved. And you don't have to look too hard to see that I'm in quite a few communities...
There's a lot of parallels to Debian and Fedora when I started in the project over a decade ago.
The clear divider in how the two projects evolved was that Fedora elected to implement a lazy consensus model for decision-making, and developed a culture with a bias for action and improvement. Debian requires full consensus (generally) and has a culture that favors inaction. This difference is what has kept me in the Fedora Project for over a decade, and I still enjoy working in that community and doing my part to improve the greater Linux community and ecosystem.
Over the years, Fedora shed a lot of its more complex processes and developed simpler tools and supporting infrastructure to make it easier to use and contribute to the development of the distribution and outlying projects. Over the years, I've seen us replace our buildsystem infrastructure[1][2][3], develop APIs and protocols for weaving tools together[4], migrate SCMs and create the first ever binary store system for Git[5][6][7], develop tools to simplify complex tasks[8][9][10], and build replacements to proprietary or overly-complex systems and support open standards and interoperable systems[11][12], all to benefit our users, our contributors, and our ecosystem. We've taken a similar hammer to our processes and structures so that we enable a wider range of people to be involved, representing their concerns and making our community healthier than before.
We're still continuing down this path of making it easier for people to leverage the Fedora Project resources for the benefit of the community with things like COPR[13], CI on packages with Koschei[14] and CentOS CI integration for projects and packages[15], etc.
That's not to say Fedora is perfect, mind you. It still has some technical and process warts. But I'm proud of the fact that our community is still actively trying to improve our processes, our tools, and our distribution. We're not afraid to make things better, and our community generally wants to make the Linux world a better place.
[1]: https://fedoraproject.org/wiki/FedoraSummit/NewBuildSystem
[2]: https://fedoraproject.org/wiki/Infrastructure/CoreExtrasMerg...
[3]: http://koji.build/
[4]: https://fedmsg.readthedocs.io/en/stable/
[5]: https://fedoraproject.org/wiki/Dist_Git_Proposal
[6]: https://fedoraproject.org/wiki/Dist_Git_Project
[7]: https://github.com/release-engineering/dist-git
[8]: https://www.mankier.com/1/fedpkg
[9]: https://bodhi.fedoraproject.org/docs/
[10]: https://mirrormanager.readthedocs.io/en/latest/
[11]: https://pagure.io/pagure
[12]: https://ipsilon-project.org/
[13]: https://copr.fedorainfracloud.org/