The note here makes it clear (link at the very top of the GitHub readme doc): https://github.com/markqvist/Reticulum/blob/master/MIRROR.md

The author intends to work at their pace, on their time, with no interaction with the public projects.

Likely, and this is supposition, a small group of developers connected on the network itself will push the project forward where pushes are needed but they may not be.

But also, the very rare and important consideration that, in their words, “Everything you need is right here, and by any sensible measure, it's done. Anyone who wants to invest the time, skill and persistence can build on it, or completely re-imagine it with different priorities.”