The author of Reticulum's take is that the implementation is the specification, so if another implementation works with the standard Python one and implements enough of it's features then it implements Reticulum.

I suppose it means it's easier to develop the protocol only having to update one Python codebase but it does mean other implementations are kinda in a state where there isn't anything to properly verify they work.

There's also a issue with quite a few vibe coded implementations that don't actually properly work filling the space.

There is a published spec, I built a clean-room implementation from it. And mine makes at least two Python implementations. The protocol itself is solid, the spec just isn't marketed.