I dare to suggest. Perhaps this is the idea of the developer — to leave the project. If the projects of Yenten and WAVI were created by one person or one group of people and they went offline. Both projects have gained a sufficient number of users and coin holders and are already listed on  exchanges. Such an option is possible as a targeted developer left the project, so that the holders could manage it themselves, if possible. A developer may want the project to develop along the lines of Bitcoin as Satoshi NakamotoBTC did when he went into the fog.

This is the very decentralization, when there is no commander. If the project continues to live, then it will show that it is needed by its coin holders!!!