I don't know why they don't communicate with investors, maybe they ara busy. But this is also their work, they should be busy with this.
Well, look to be busy is good, but I think that how they organize things and lack of communication is just a small sign of being badly organized, it doesn't require so much time to answer questions or update community/investors/supporters, a few lines a week, not a big deal, as not it lore looks like a favor and begging for some pieces of information.