There's definitely room for a well run decentralized social media, but, the lack of communication is not a good sign for a social media type project.
You are right about this.
If they can't communicate well how can they handle social media platform?
Poor outreach to the community during the ICO is not a great sign to see indeed, but I wouldn't be so quick to correlate that to the capabilities of the developers
As of now, their primary purpose is not to communicate with their audience, but still, this is really not the best sign. However, when they have more time later, I am sure that everything will be just fine.