I've contributed a few trivial fixes to OrganicMaps and I found them to be pretty responsive and reasonable in their opinions. That doesn't mean I agreed with all the decisions or priorities they make but that's to be expected. Their leadership seemed sane enough to me. It certainly felt like close enough to a BDFL situation to me.

In the research I did, OrganicMaps was the only viable open alternative to something like Gaia and it wasn't particularly close. It does a pretty good job of that, though their map styles leave some things to be desired and meter only topo lines is a bummer.

My limited experience playing around with the codebase made me appreciate that this isn't a small or simple project. It is a huge mixed codebase of C/Java/etc to share rendering across platforms and even just the map file generation is no small thing.

Color me skeptical that a fork will get off the ground, this seems more likely to me that both projects will struggle for a good while longer. Announcing a fork is easy, delivering something with enough value beyond rhetoric that will draw users over is another.