I saw this discussion on Telegram. Some custom account posted something like "I see no Reddit activity, so it seems that Dev left the project" and that's it.

Just after that some other custom accounts posted another bulshit comments, assuming that this is true.

IMHO they just want to spread FUD to buy MSP low.

Besides, Mothership is still hiring, you can see available positions here: https://angel.co/mothershipcx/jobs

At the moment this project is in very early stage and all the news are still ahead of us.